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Magodoro IM, Castle AC, Tshuma N, Goedecke JH, Sewpaul R, Manasa J, Manne-Goehler J, Ntusi N, Nyirenda MJ, Siedner MJ. Associations of HIV and prevalent type 2 diabetes mellitus in the context of obesity in South Africa. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.03.10.24304033. [PMID: 38559082 PMCID: PMC10980116 DOI: 10.1101/2024.03.10.24304033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
It is unclear how rising obesity among people with HIV (PWH) in sub-Saharan Africa (SSA) impacts their risk of type 2 diabetes mellitus (diabetes). Using a South African national cross-sectional sample of adult PWH and their peers without HIV (PWOH), we examined the associations between HIV and prevalent diabetes across the spectrum of body mass index (BMI), waist circumference (WC) and waist-to-height ratio (WtHR). Analyses were sex stratified, and adjusted for age, sociodemographic and behavioral factors. The prevalence of diabetes among males was similar between PWH and PWOH, overall and at all levels of adiposity. In contrast, overall diabetes prevalence was higher among female PWOH than female PWH. However, there were differences according to adiposity such that, compared to female PWOH, relative diabetes prevalence in female PWH was reduced with obesity but accentuated with leanness. These differences in the relationship between adiposity and diabetes by HIV serostatus call for better mechanistic understanding of sex-specific adipose tissue biology in HIV in South Africa, and possibly in other HIV endemic settings in SSA.
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Issaka A, Paradies Y, Cameron AJ, Stevenson C. The association between body weight indices, behavioral factors, and type 2 diabetes mellitus in Africa: A systematic review and meta-analysis of population-based epidemiological studies. Nutr Metab Cardiovasc Dis 2024; 34:1-18. [PMID: 38016892 DOI: 10.1016/j.numecd.2023.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 05/07/2023] [Accepted: 06/14/2023] [Indexed: 11/30/2023]
Abstract
BACKGROUND AND AIM Type 2 diabetes mellitus (T2DM) is a significant public health concern in Africa. While the associations between modifiable risk factors and T2DM are likely to be Africa-specific, their overall estimations have not been published. This study aimed to use systematic and meta-analytic methods to examine the strength of associations between modifiable risk factors and T2DM in Africa. METHODS AND RESULTS A systematic search of literature published between January 2000 to March 2022 was conducted. The review included only population-based studies and data extracted from 57 studies. Of these, unadjusted data from 50 studies were included in meta-analysis. With considerable heterogeneity between studies, random-effect models were calculated to ascertain the odds ratios (OR) and 95% confidence intervals (CI) for the associations between obesity (OB) and overweight (OV), defined by BMI; central obesity (waist circumference (OB-WC), waist-to-hip-ratio (OB-WHR)), alcohol, fruit and vegetable consumption, smoking, physical activity (PA) and T2DM. Moderator effects of age, African regions, and urban/rural location were assessed. Risk factors associated with T2DM include BMI-OB [OR = 3.05, 95% CI: (2.58, 3.61)], BMI-OV [OR = 2.38, 95% CI: (1.51, 3.75)], and BMI-OV/OB [OR = 2.07, 95% CI: (1.82, 2.34)]; OB-WC [OR = 2.58, 95% CI: (2.09, 3.18)] and OB-WHR [OR = 2.22, 95% CI: (1.69, 2.92)]; PA [OR = 1.85, 95% CI: (1.50, 2.30)]. Significant moderator effects were not observed. CONCLUSION Obesity defined by BMI and central obesity, but not behavioral risk factors were most strongly associated with T2DM in African populations, emphasizing the need for obesity prevention to limit the rise of T2DM. REGISTRATION The PROSPERO registration number is CRD42016043027.
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Affiliation(s)
- Ayuba Issaka
- Global Obesity Centre (GLOBE), School of Health and Social Development, Faculty of Health, Institute for Health Transformation, Deakin University, 1 Gheringhap St, Geelong, VIC 3220, Australia; Alfred Deakin Institute for Citizenship and Globalisation, Faculty of Arts and Education, Deakin University, 221 Burwood Highway, Burwood, VIC 3125, Australia; Baker Heart and Diabetes Institute, Non-Communicable Diseases and Implementation Science Unit, VIC, Australia.
| | - Yin Paradies
- Alfred Deakin Institute for Citizenship and Globalisation, Faculty of Arts and Education, Deakin University, 221 Burwood Highway, Burwood, VIC 3125, Australia
| | - Adrian J Cameron
- Global Obesity Centre (GLOBE), School of Health and Social Development, Faculty of Health, Institute for Health Transformation, Deakin University, 1 Gheringhap St, Geelong, VIC 3220, Australia
| | - Christopher Stevenson
- Global Obesity Centre (GLOBE), School of Health and Social Development, Faculty of Health, Institute for Health Transformation, Deakin University, 1 Gheringhap St, Geelong, VIC 3220, Australia
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Nyanchoka MA, van Stuijvenberg ME, Tambe AB, Zuma MK, Mbhenyane XG. Fruit and Vegetable Consumption Patterns and Risk of Chronic Diseases of Lifestyle among University Students in Kenya. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19126965. [PMID: 35742215 PMCID: PMC9222637 DOI: 10.3390/ijerph19126965] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 02/03/2023]
Abstract
This study assesses the fruit and vegetable consumption patterns and risk factors for chronic diseases of lifestyle (CDL) among young adults attending Kenyatta University, Kenya. Four hundred and twenty-three young adults aged 19–30 years participated in the cross-sectional study. Males were 75.0% less likely to be overweight than females (OR = 0.25; 0.13–0.47). The mean overall consumption of fruit and/or vegetables amounted to 3.6 servings in a typical day. Eight in ten participants consumed lower amounts of fruits and vegetables than recommended by the WHO. At least one combined risk factor of CDL was observed among 91.3% of the young adults. About 8.7% of the participants were classified as low risk for CDL (having none of the five risk factors), 48.9% had one risk factor, 32.9% had two risk factors, 8.5% had three risk factors, while 0.9% had four risk factors. A significant relationship between daily fruit consumption and waist circumference was observed. These findings show the dire need to develop public health nutrition activities aimed at increasing the intake of fruit and vegetables and sensitizing young adults, and the general population, to the risk factors of CDL.
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Affiliation(s)
- Moriasi Abednego Nyanchoka
- Division of Human Nutrition, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town 8000, South Africa; (M.A.N.); (A.B.T.)
| | | | - Ayuk Betrand Tambe
- Division of Human Nutrition, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town 8000, South Africa; (M.A.N.); (A.B.T.)
| | - Mthokozisi Kwazi Zuma
- Division of Human Nutrition, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town 8000, South Africa; (M.A.N.); (A.B.T.)
| | - Xikombiso Gertrude Mbhenyane
- Division of Human Nutrition, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town 8000, South Africa; (M.A.N.); (A.B.T.)
- Correspondence:
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Nkondo-Ndaba MP, Joubert PM, Ballyram T, van Rensburg CJ. Influence of first- and second-generation antipsychotics on anthropometric parameters of male psychiatric patients. S Afr J Psychiatr 2022. [DOI: 10.4102/sajpsychiatry.v2i0.1772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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5
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Oguoma VM, Coffee NT, Alsharrah S, Abu-Farha M, Al-Refaei FH, Alkandari A, Al-Mulla F, Daniel M. Anthropometric cut-points for discriminating diabetes and the metabolic syndrome among Arabs and Asians: the Kuwait Diabetes Epidemiology Program. Br J Nutr 2022; 127:92-102. [PMID: 33658089 DOI: 10.1017/s0007114521000751] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
This study aimed to determine anthropometric cut-points for screening diabetes and the metabolic syndrome (MetS) in Arab and South Asian ethnic groups in Kuwait and to compare the prevalence of the MetS based on the ethnic-specific waist circumference (WC) cut-point and the International Diabetes Federation (IDF) and American Heart Association/National Heart, Lung, and Blood Institute WC criteria. The national population-based survey data set of diabetes and obesity in Kuwait adults aged 18-60 years was analysed. Age-adjusted logistic regression and receiver operating characteristic (ROC) analyses were conducted to evaluate for 3589 individuals the utility of WC, waist:height ratio (WHtR) and BMI to discriminate both diabetes and ≥3 CVD risk factors. Areas under the ROC curve were similar for WC, WHtR and BMI. In Arab men, WC, WHtR and BMI cut-offs for diabetes were 106 cm, 0·55 and 28 kg/m2 and for ≥3 CVD risk factors, 97 cm, 0·55 and 28 kg/m2, respectively. In Arab women, cut-offs for diabetes were 107 cm, 0·65 and 33 kg/m2 and for ≥3 CVD risk factors, 93 cm, 0·60 and 30 kg/m2, respectively. WC cut-offs were higher for South Asian women than men. IDF-based WC cut-offs corresponded to a higher prevalence of the MetS across sex and ethnic groups, compared with Kuwait-specific cut-offs. Any of the assessed anthropometric indices can be used in screening of diabetes and ≥3 CVD risk factors in Kuwaiti Arab and Asian populations. ROC values were similar. The WC threshold for screening the MetS in Kuwaiti Arabs and South Asians is higher for women.
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Affiliation(s)
- Victor M Oguoma
- Health Research Institute, University of Canberra, Canberra, Australia
- Geohealth Laboratory, Dasman Diabetes Institute, Kuwait City, Kuwait
- Menzies School of Health Research, Charles Darwin University, Darwin, Australia
| | - Neil T Coffee
- Health Research Institute, University of Canberra, Canberra, Australia
| | - Saad Alsharrah
- Health Research Institute, University of Canberra, Canberra, Australia
- Geohealth Laboratory, Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Mohamed Abu-Farha
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, Kuwait City, Kuwait
| | | | - Abdullah Alkandari
- Genetics and Bioinformatics Department, Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Fahd Al-Mulla
- Genetics and Bioinformatics Department, Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Mark Daniel
- Health Research Institute, University of Canberra, Canberra, Australia
- Department of Medicine, St. Vincent's Hospital, The University of Melbourne, Melbourne, Australia
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6
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Issaka A, Cameron AJ, Paradies Y, Kiwallo JB, Bosu WK, Houehanou YCN, Wesseh CS, Houinato DS, Nazoum DJP, Stevenson C. Associations between obesity indices and both type 2 diabetes and impaired fasting glucose among West African adults: Results from WHO STEPS surveys. Nutr Metab Cardiovasc Dis 2021; 31:2652-2660. [PMID: 34226119 DOI: 10.1016/j.numecd.2021.05.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 05/19/2021] [Accepted: 05/21/2021] [Indexed: 01/03/2023]
Abstract
BACKGROUND AND AIM Various obesity indices such as BMI, waist circumference (WC), waist-hip ratio, (WHR) and waist-to-height ratio (WHtR) are associated with the risk of type 2 Diabetes Mellitus (T2DM). Given few studies examining the strength of the association in this population, we aimed to identify which obesity indices are most strongly associated with T2DM and impaired fasting glucose (IFG) among adults from five West African countries. METHODS AND RESULTS Data from 15,520 participants from the World Health Organisation (WHO) STEPs surveys in Burkina Faso, Benin, Mali, Liberia, and Ghana were included in analyses. Multinomial logistic regression was used to calculate the relative risk (RR) per standard deviation (SD) of each anthropometric measure, modelled as both continuous variables and as categorical variables based on established cut-points. In the analyses with continuous variables, the unadjusted RRs for T2DM per SD were 1.30 (1.23, 1.37) for body mass index (BMI); 1.56 (1.46, 1.67) for WC; 2.57 (2.15, 3.09) for WHtR and 1.16 (1.03, 1.31) for WHR. WHtR showed the strongest association with T2DM in all adjusted analyses. For models using categorical variables based on established cut-points, obesity defined using waist circumference (OB-WC) and OB-BMI showed the strongest associations with T2DM, and OB-WHR, the weakest association in all adjusted analyses. CONCLUSION WHtR and WC appear to be the indices most strongly associated with T2DM and IFG respectively. Given its simplicity, WC may be the metric that most usefully conveys risk for T2DM in West African adults.
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Affiliation(s)
- Ayuba Issaka
- School of Health and Social Development, Faculty of Health, Deakin University, Geelong, Waurn Ponds Campus, Locked Bag 20000, Geelong, VIC, 3220, Australia; Alfred Deakin Institute for Citizenship and Globalisation, Faculty of Arts and Education, Deakin University, 221 Burwood Highway, Burwood, Victoria, 3125, Australia.
| | - Adrian J Cameron
- School of Health and Social Development, Faculty of Health, Deakin University, Geelong, Waurn Ponds Campus, Locked Bag 20000, Geelong, VIC, 3220, Australia.
| | - Yin Paradies
- Alfred Deakin Institute for Citizenship and Globalisation, Faculty of Arts and Education, Deakin University, 221 Burwood Highway, Burwood, Victoria, 3125, Australia.
| | - Jean B Kiwallo
- Directorate of Population Health Protection (DPSP) of the Burkina Faso, Ministry of Health, Ouagadougou, Burkina Faso.
| | - William K Bosu
- West Africa Health Organization, 01 BP 153, Bobo-Dioulasso, Burkina Faso.
| | - Yèssito Corine N Houehanou
- National School of Senior Technicians Training in Public Health and Epidemiological Surveillance, University of Parakou, Postal Box 122, Parakou, Benin.
| | - Chea S Wesseh
- Ministry of Health, Republic of Liberia, Congo Town, Monrovia, Liberia.
| | - Dismand S Houinato
- Laboratory of Epidemiology of Chronic and Neurological Diseases (LEMACEN), Faculty of Health Sciences, 01 Postal Box 188 Cotonou, University of Abomey Calavi, Cotonou, Benin.
| | - Diarra J P Nazoum
- Former Head of Noncommunicable Diseases, National Directorate of Health, Ministry of Health and Public Hygiene, Bomako, Mali.
| | - Christopher Stevenson
- School of Health and Social Development, Faculty of Health, Deakin University, Geelong, Waurn Ponds Campus, Locked Bag 20000, Geelong, VIC, 3220, Australia.
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Association between Atrial Fibrillation Incidence and Temperatures, Wind Scale and Air Quality: An Exploratory Study for Shanghai and Kunming. SUSTAINABILITY 2021. [DOI: 10.3390/su13095247] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
As a common cardiovascular disease, atrial fibrillation has the characteristics of high morbidity, high disability, and high fatality rates, seriously endangering human health and sustainability. Some research has confirmed that environmental factors are related to the risk of illness and death from cardiovascular diseases (including atrial fibrillation), while there is still little comparison on the situation of the two cities in China. This research uses medical data in Shanghai and Kunming establishing, through two-step research, logistic models to compare the impacts on atrial fibrillation incidence to figure out the association between environmental factors (including air pollution, weather, temperature, and wind scales) and atrial fibrillation. Finally, this research shows that environmental impacts on atrial fibrillation prevalence have generality, regionality, and lagging characteristics. The result is significant for atrial fibrillation patients and provides a reliable medical theory basis for nursing measures. Besides, this research provides a prospective method of offering early warning for potential atrial fibrillation patients, helping to maintain human beings’ sustainable development.
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Köchli S, Schutte AE, Kruger R. Adiposity and physical activity are related to heart rate variability: the African-PREDICT study. Eur J Clin Invest 2020; 50:e13330. [PMID: 32589287 DOI: 10.1111/eci.13330] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/11/2020] [Accepted: 06/18/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Physical inactivity contributes significantly to the development of obesity-related cardiovascular disease. Adiposity may lead to reduced heart rate variability (HRV), whereas increased physical activity (PA) has the potential to improve autonomic activity. These associations remain largely unexplored in healthy individuals. We therefore investigated whether adiposity and physical activity (PA) are associated with reduced heart rate variability (HRV) in young adults. MATERIALS AND METHODS We examined 403 black and 461 white healthy adults (aged 20-30 years) for HRV, including standard deviation of normal RR intervals (SDNN) and root mean square of successive differences (RMSSD). We measured adiposity, PA levels and blood pressure (BP). Body mass index (BMI) of ≥ 30 kg/m2 indicated obesity. RESULTS Participants with obesity had lower mean HRV than normal weight (SDNN [95% CI]; 138 [131-145]s vs 161 [158-165]ms), where those with the highest PA had higher SDNN (164 [160-169]ms) and RMSSD (51 [49-53]ms) than the least active individuals (150 [146-155]s) and 46 [44-48]ms)(all P < .01). BMI, waist circumference and body fat associated with lower SDNN (P < .001). With each unit increase of vigorous PA, a favourable higher RMSSD was found (P < .05). One unit increase in diastolic BP was associated with decreased SDNN and RMSSD (P < .001). These findings remained significant in multivariable-adjusted analyses. CONCLUSIONS Adiposity and low PA associated independently with depressed autonomic activity in young healthy adults. Sympathovagal imbalance seems to already contribute to elevated diastolic BP at young ages. Our study supports population-based prevention programmes in young adults, improving PA and healthy diet, to curb the development of cardiovascular disease.
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Affiliation(s)
- Sabrina Köchli
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa
| | - Aletta E Schutte
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa.,Medical Research Council: Unit for Hypertension and Cardiovascular Disease, Faculty of Health Sciences, North-West University, Potchefstroom, South Africa.,School of Public Health and Community Medicine, University of New South Wales; The George Institute for Global Health, Sydney, NSW, Australia
| | - Ruan Kruger
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa.,Medical Research Council: Unit for Hypertension and Cardiovascular Disease, Faculty of Health Sciences, North-West University, Potchefstroom, South Africa
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Gradidge PJL, Kruger HS. Physical activity, diet and quality of life during mandatory (COVID-19) quarantine following repatriation. SAGE Open Med Case Rep 2020; 8:2050313X20972508. [PMID: 33240501 PMCID: PMC7675897 DOI: 10.1177/2050313x20972508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 10/20/2020] [Indexed: 11/24/2022] Open
Abstract
The coronavirus disease 2019 crisis in South Africa has been managed through an effective evidence-based approach. The aim of this case report was to determine the value of staying physically active during the coronavirus disease 2019 pandemic, using online resources to prevent the harmful effects of sedentary behaviour under confined living conditions. A repatriated South African citizen was placed into monitored 14-day quarantine confined to a room, self-monitoring dietary intake and physical and health measures, while engaged in online exercise videos and indoor walking. This study demonstrates that structured indoor activity improves physical and mental health outcomes, despite prolonged sitting time during the day. During the current pandemic and in the presence of limited freedom of movement, sustained physical activity is made feasible by accessing online tools and resources, essentially reducing vulnerability to existing cardiovascular health concerns. However, these findings are based on a single participant and therefore further study is required.
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Affiliation(s)
- Philippe Jean-Luc Gradidge
- Centre for Exercise Science and Sports
Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg,
South Africa
| | - Herculina Salome Kruger
- Centre of Excellence for Nutrition,
North-West University, Potchefstroom, South Africa
- Medical Research Council Hypertension
and Cardiovascular Disease Research Unit, North-West University, Potchefstroom,
South Africa
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10
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Peer N, Lombard C, Steyn K, Levitt N. Waist-to-height ratio is a useful indicator of cardio-metabolic risk in South Africa. Fam Pract 2020; 37:36-42. [PMID: 31504474 DOI: 10.1093/fampra/cmz044] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND The use of waist-to-height ratio has been suggested as a better proxy indicator of central obesity. OBJECTIVE To compare the utility of waist-to-height ratio with commonly used adiposity indices of body mass index, waist circumference and waist-to-hip ratio to identify cardio-metabolic diseases in 25-74-year-old black residents of Cape Town. METHODS This cross-sectional study, stratified for age and gender, determined cardio-metabolic abnormalities by administered questionnaires, clinical measurements and biochemical analyses, including oral glucose tolerance tests. Correlations between adiposity indices with cardio-metabolic components were examined. Age- and gender-adjusted logistic regression analyses determined the associations of obesity by these adiposity indices with cardio-metabolic abnormalities. RESULTS The study comprised 392 men and 707 women. Compared with other adiposity indices, waist-to-height ratio in men correlated most closely with fasting (0.360) and 2-hour (0.388) glucose levels, total cholesterol (0.267), low-density lipoprotein cholesterol (0.351) and triglycerides (0.400). In women, waist-to-height ratio correlated the best with systolic blood pressure (0.254) and diastolic blood pressure (0.287). Of the adiposity indices, waist circumference was most strongly associated with diabetes (odds ratio 4.27, 95% confidence interval: 2.39-7.62), low high-density lipoprotein cholesterol (2.84, 1.90-4.26) and hypertriglyceridaemia (3.60, 2.03-6.40), whereas raised waist-to-height ratio was most closely related to hypertension (1.61, 1.07-2.42), hypercholesterolaemia (1.72, 1.04-2.83) and raised low-density lipoprotein cholesterol (2.46, 1.70-3.55). CONCLUSIONS Compared with other adiposity indices, the better correlation of waist-to-height ratio with many cardio-metabolic components, particularly in men, and the stronger association of raised waist-to-height ratio with hypertension, hypercholesterolaemia and raised low-density lipoprotein cholesterol support the utility of waist-to-height ratio in routine assessments of adiposity in this population, which may improve the identification of cardio-metabolic risk.
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Affiliation(s)
- Nasheeta Peer
- Non-communicable Diseases Research Unit, South African Medical Research Council, Durban.,Department of Medicine, University of Cape Town, Cape Town
| | - Carl Lombard
- Biostatistics Unit, South African Medical Research Council, Cape Town
| | - Krisela Steyn
- Chronic Diseases Initiative for Africa, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Naomi Levitt
- Department of Medicine, University of Cape Town, Cape Town.,Chronic Diseases Initiative for Africa, Department of Medicine, University of Cape Town, Cape Town, South Africa
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External validation of the relative fat mass (RFM) index in adults from north-west Mexico using different reference methods. PLoS One 2019; 14:e0226767. [PMID: 31891616 PMCID: PMC6938316 DOI: 10.1371/journal.pone.0226767] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 12/03/2019] [Indexed: 12/14/2022] Open
Abstract
Background Analysis of body composition is becoming increasingly important for the assessment, understanding and monitoring of multiple health issues. The body mass index (BMI) has been questioned as a tool to estimate whole-body fat percentage (FM%). Recently, a simple equation described as relative fat mass (RFM) was proposed by Woolcott & Bergman. This equation estimates FM% using two anthropometric measurements: height and waist circumference (WC). The authors state that due to its simplicity and better performance than BMI, RFM could be used in daily clinical practice as a tool for the evaluation of body composition. The aim of this study was to externally validate the equation of Woolcott & Bergman to estimate FM% among adults from north-west Mexico compared with Dual-energy X-ray absorptiometry (DXA) as an alternative to BMI and secondly, to make the same comparison using air displacement plethysmography (ADP), Bioelectrical Impedance Analysis (BIA) and a 4-compartment model (4C model). Methods Weight, height and WC were measured following standard procedures. The RFM index was calculated for each of the 61 participating subjects (29 females and 32 males, ages 20–37 years). The RFM was then regressed against each of the four body composition methods for estimating FM%. Results Compared with BMI, RFM was a better predictor of FM% determined by each of the body composition methods. In terms of precision the best equation was RFM regressed against DXA (y = 1.12 + 0.99 x; R2 = 0.84 p<0.001). Accuracy (represented by the closeness to the zero-intercept) was 1.12 (95% CI: -2.44, to 4.68) and thus, not significantly different from zero. For the rest of the methods, precision in the prediction of FM% was improved compared to BMI, with significant increases in the R2 and reduction of the root mean squared error (RMSE). However, the intercepts of each regression did not show accuracy since they were different from zero, for ADP: -9.95 (95%CI: -15.7 to -4.14), for BIA: -12.6 (95%CI: -17.5 to -7.74) and for the 4C model: -13.6 (95%CI: -18.6 to -8.60). Irrespectively, FM% measured by each of the body composition methods was higher for DXA than the other three methods (p<0.001). Conclusions This external validation proved that the performance of the RFM equation used in this study to estimate FM% was more consistent than BMI in this Mexican population, showing a stronger correlation with DXA than with the other body composition methods.
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12
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Ismail NA, Ragab SH, El Baky AMNEDA, Ibrahim MH. Potential Role of New Anthropometric Parameters in Childhood Obesity with or Without Metabolic Syndrome. Open Access Maced J Med Sci 2019; 7:3930-3936. [PMID: 32165931 PMCID: PMC7061385 DOI: 10.3889/oamjms.2019.698] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 11/19/2019] [Accepted: 11/20/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Obese children and adolescents are more prone to have metabolic syndrome (MS).MS is a cluster of cardiovascular risk factors associated with insulin resistance. Body round index [BRI], visceral adiposity index [VAI] and a body shape index [ABSI] are among the new obesity anthropometric parameters. AIM To evaluate the new markers for obesity in children and their possible association with other laboratory and clinical variables of MS. METHODS Eighty nine obese children and 40 controls aged 10-18 years were recruited. Full history taking, thorough clinical examination, anthropometric and biochemical features were performed in the studied groups. Subcutaneous fat thickness (SFT) and visceral fat thickness (VFT) were estimated by ultrasonography. RESULTS Obese children, exhibited significantly higher values in all anthropometric measurements (P < 0.001). Diastolic and systolic blood pressure were significantly higher (P < 0.001) in the obese group. ABSI, BRI and VAI have been found to be significantly higher in obese subjects (P < 0.001), with no significant gender difference. BMI, WHtR, WC/HR, SBP, DBP, subcutaneous fat thickness and visceral fat thickness, Liver Span, ABSI, BRI, VAI and HOMA_IR were significantly higher among children with MS than those without MS. Positive significant correlations of VAI with BMI, WC/Ht, WC/Hip, SBP, DBP, SFT, VFT, Liver size and HOMA-IR (r = 0.384, 0.239, 0.268, 0.329, 0.516, 0.320, 0.254, 0.251, and 0.278 respectively) are shown. The area under the ROC curve (AUC) of BMI, VAI, ABSI, BRI for predicting MS was 0.802 (0.701-0.902), 0.737 (0.33-0.841), 0.737 (0.620-0.855), 0.816 (0.698-0.934). CONCLUSION We suggest using the VAI and WHtR indexes, as they are better predictor of MS.
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Affiliation(s)
| | - Shadia H Ragab
- Department of Clinical Pathology, National Research Centre (NRC), Cairo, Egypt
| | | | - Mona Hamed Ibrahim
- Department of Clinical Pathology, National Research Centre (NRC), Cairo, Egypt
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Zhang YX, Wang SR. Profiles of body mass index and blood pressure among young adults categorised by waist-to-height ratio cut-offs in Shandong, China. Ann Hum Biol 2019; 46:409-414. [PMID: 31304787 DOI: 10.1080/03014460.2019.1640792] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Background: Waist-to-height ratio (WHtR) is proposed as a valid measure of abdominal obesity and health risks in practice. The present study examined the profiles of weight status and blood pressure (BP) among young adults categorised by WHtR cut-offs.Methods: A total of 4226 college students (2107 males and 2119 females) aged 19-22 years participated in the study. The body mass index (BMI) cut-offs recommended by the Working Group on Obesity in China (WGOC) were used to define underweight, normal weight, overweight and obesity. The BMI and BP profiles within each WHtR category were examined.Results: For both males and females, 'the high WHtR group' (WHtR ≥ 0.5) had the highest, and 'the low WHtR group' (WHtR < 0.4) had the lowest BMI and BP levels. In the WHtR = 0.30-0.34 sub-group, 66.10% of males and 66.67% of females were underweight; in the WHtR ≥ 0.55 sub-group, 91.49% of males and 83.33% of females were obese; in the WHtR = 0.40-0.44 sub-group, 88.88% of males and 89.85% of females were normal weight. The prevalence of high BP in the WHtR < 0.5 group was 9.99% in males and 2.19% in females; the corresponding figures were 28.92% (males) and 14.06% (females) in the WHtR ≥ 0.5 group; the latter is significantly higher than the former (p < 0.01).Conclusion: Individuals with low WHtR were underweight and those with high WHtR were obese with high BP. Results from this study support WHtR as a simple and effective screening tool for abdominal obesity and high BP in practice.
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Affiliation(s)
- Ying-Xiu Zhang
- Shandong Center for Disease Control and Prevention, Shandong University Institute of Preventive Medicine, Shandong,PR China
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Farhangiyan Z, Latifi SM, Rashidi H, Shahbazian H. The most appropriate cut-off point of anthropometric indices in predicting the incidence of metabolic syndrome and its components. Diabetes Metab Syndr 2019; 13:2739-2745. [PMID: 31405702 DOI: 10.1016/j.dsx.2019.07.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Accepted: 07/08/2019] [Indexed: 11/18/2022]
Abstract
INTRODUCTION The association of individuals' anthropometric indices with their development of metabolic syndrome (MetS) has been investigated in several studies. Taking into account the ethnic differences, this study aimed to determine the most appropriate cut-off points of anthropometric indices in predicting the incidence of MetS and its components in Ahvaz. METHODS This study is part of a cohort study conducted at the Diabetes Research Center of Ahvaz Jundishapur University of Medical Sciences on a population of over 20 in Ahvaz during 2009-2014. Of the 592 patients, 505 patients who were not diagnosed with MetS in 2009, were entered into this study. The data analyzed involved demographic information including age and sex, anthropometric information including height, weight, waist circumference (WC), hip circumference (HC) and the ratios between them, laboratory data including blood levels of Triglyceride (TG), Fasting plasma glucose (FPG) and High-density lipoprotein cholesterol (HDL-C), and clinical data including systolic(S) and diastolic(D)blood pressure(BP). After 5 years, the subjects were re-evaluated for MetS based on the National Cholesterol Education Program - Adult Treatment Panel III (NCEP-ATP III) criteria and the most appropriate cut-off points of anthropometric indices for the prediction of the incidence of MetS using the Receiver Operative Characteristic (ROC) curves were obtained. RESULTS Waist-to-Height Ratio (WHtR) index with a cut-off point of 0.53 followed by WC with a cut-off point of 87.5 cm had the highest power to predict the incidence of MetS. The cut-off points of WC and Body mass index (BMI) were respectively 89.5 cm and 26 kg/m2 for men, and 83.5 cm and 27.5 kg/m2 for women. All anthropometric indices were able to predict the components of this syndrome (with the exception of low HDL-C). The cut-off point of WC in predicting High FBS, High TG and High BP was 84.5, 84.8, and 86.5 cm, respectively. CONCLUSION Overall, it seems that given its ease of measurement, the WC index is preferred to other indices for predicting the incidence of MetS and its components in clinical screening.
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Affiliation(s)
- Zahra Farhangiyan
- Diabetes Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Seyed Mahmoud Latifi
- Diabetes Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Homeira Rashidi
- Diabetes Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Hajieh Shahbazian
- Diabetes Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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15
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Gallegos D, Do H, To QG, Vo B, Goris J, Alraman H. Differences in cardiometabolic risk markers among ethnic groups in Queensland, Australia. HEALTH & SOCIAL CARE IN THE COMMUNITY 2019; 27:e449-e458. [PMID: 30905074 DOI: 10.1111/hsc.12745] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/23/2019] [Accepted: 02/25/2019] [Indexed: 06/09/2023]
Abstract
Very little is known about the cardiometabolic risk of migrants who settle in Australia. This study investigated differences in cardiometabolic risk markers among ethnic groups attending a tailored healthy lifestyle program in Queensland, Australia; and differences in these markers between those living in Australia for shorter versus longer periods of time. Baseline data collected between October 2014 and June 2017 from the Living Well Multicultural-Lifestyle Modification Program were used. People living in ethnic communities in Queensland who were ≥18 years old, and not underweight were eligible to participate. Independent variables were ethnicity and length of time in Australia. Outcomes were cardiometabolic risk markers including BMI, waist circumference, weight-to-height ratio (WHtR) and hypertension. Analyses were done separately for each independent variable. Linear and logistic regressions were run for continuous and binary outcomes with differences/Odds ratios reported respectively. Multivariable analyses showed that Burmese/Vietnamese had an average BMI lower than Afghani/Arabic (3.7 points), Somalian/Sudanese (4.7 points) and Pacific Islander (11.6 points) (p < 0.001) respectively. Differences in waist circumference between Burmese/Vietnamese with Sri Lankan/Bhutanese, Afghani/Arabic, Somalian/Sudanese and Pacific Islander were 6.3, 8.4, 9.1 and 24.0 cm (p < 0.01) respectively. Although Burmese/Vietnamese also had lower average WHtR compared to the others, the differences were not significant for Somalian/Sudanese. Moreover, Sri Lankan/Bhutanese and Pacific Islander were more likely to be hypertensive compared to Burmese/Vietnamese (p < 0.05). Immigrants living in Australia >5years had on average 1.2 points higher BMI, 2.4cm larger waist circumference, and 0.02 points higher WHtR (p < 0.05) compared to those living for ≤5 years. Long-stay immigrants were also more likely to be hypertensive than short-stay immigrants (p < 0.01). In conclusion, cardiometabolic risk is significantly different among ethnic groups in Queensland with Pacific Islanders having the highest risk. Immigrants living in Australia >5 years had higher risks compared to those living in Australia for shorter periods of time.
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Affiliation(s)
- Danielle Gallegos
- School of Exercise and Nutrition Sciences, Queensland University of Technology, Kelvin Grove, QLD, Australia
| | - Hong Do
- Chronic Disease Program, Ethnic Communities Council of Queensland, Brisbane, QLD, Australia
| | - Quyen G To
- School of Exercise and Nutrition Sciences, Queensland University of Technology, Brisbane, QLD, Australia
| | - Brenda Vo
- School of Exercise and Nutrition Sciences, Queensland University of Technology, Brisbane, QLD, Australia
- School of Science and Technology, University of New England, Armidale, NSW, Australia
| | - Janny Goris
- Preventive Health Branch, Prevention Division, Queensland Department of Health, Herston, QLD, Australia
| | - Hana Alraman
- Chronic Disease Program, Ethnic Communities Council of Queensland, Brisbane, QLD, Australia
- EACH, National Disability Insurance Scheme, Brisbane, QLD, Australia
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16
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Zhu HT, Yu M, Hu H, He QF, Pan J, Hu RY. Factors associated with glycemic control in community-dwelling elderly individuals with type 2 diabetes mellitus in Zhejiang, China: a cross-sectional study. BMC Endocr Disord 2019; 19:57. [PMID: 31170961 PMCID: PMC6555723 DOI: 10.1186/s12902-019-0384-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 05/24/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Although exercise seems to be beneficial for type 2 diabetes mellitus (T2DM) patients, there is limited research elucidating the optimal accessible indices of adiposity and insulin resistance for identifying elderly T2DM patients with poor glycemic control, which could be improved by performing regular exercise. METHODS A community-based, cross-sectional study was conducted with 918 Chinese elderly individuals with T2DM in Zhejiang. Relevant risk factors for poor glycemic control, as determined using glycated haemoglobin A1c (HbA1c) > 7%, were explored using logistic regression analyses and included body mass index (BMI), waist circumference (WC), waist to height ratio (WHtR), fasting blood glucose (FBG), triglycerides (TGs), total cholesterol (TC), the product of fasting triglycerides and glucose (TyG), visceral adiposity index (VAI), lipid accumulation product (LAP), TyG-BMI, and TyG-WC. Comparisons of the risk factors' ability to discriminate poor glycemic control as well as their optimal cutoff values were determined using receiver operating characteristic (ROC) analyses, and then the extent of poor glycemic control risk reduction through regular exercise was examined using multivariate logistic regression analyses. RESULTS The overall poor glycemic control rate was 49.3%. The factors associated with poor glycemic control included FBG > 3.869, TyG > 8.73, TyG-BMI > 222.45, and TyG-WC > 713.48 in logistic regression analyses. The optimal cutoff points of FBG, TyG, TyG-WC, and TyG-BMI in discriminating poor glycemic control were 7.38, 9.22, 813.33, and 227.77, and their corresponding areas under the ROC curves were 0.864(0.840-0.886), 0.684(0.653-0.714), 0.604(0.571-0.635), and 0.574(0.541-0.606), respectively. Occasional and regular exercise reduced the odds ratios (95% confidence interval) of poor glycemic control to 0.187 (0.063-0.557) and 0.183 (0.059-0.571) for subjects with TyG-WC > 813.33 (p = 0.008), to 0.349 (0.156-0.782) and 0.284 (0.123-0.652) for subjects with TyG > 9.22 (p = 0.011), and to 0.390 (0.175-0.869) and 0.300(0.130-0.688) for subjects with TyG-BMI > 227.77 (p = 0.017), respectively, after adjusting for multiple confounding factors. CONCLUSION Among elderly individuals with T2DM, poor glycemic control risk might be identified using indices calculated from FBG, TG, BMI, and WC measurements, which are indicative of adiposity and insulin resistance. TyG-WC seems to be an accessible and useful indicator to identify which elderly T2DM patients would benefit from performing regular exercise to achieve good glycemic control.
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Affiliation(s)
- Hong-Ting Zhu
- Yongkang Municipal Center for Disease Control and Prevention, Jinghua, Zhejiang, 321300 China
| | - Min Yu
- Department of Occupational Diseases, Zhejiang Academy of Medical Sciences, Zhejiang, 310013 Hangzhou China
| | - Hao Hu
- Yongkang Municipal Center for Disease Control and Prevention, Jinghua, Zhejiang, 321300 China
| | - Qing-Fang He
- Department of NCDs Control and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, No. 3399, Binsheng Road, Zhejiang, 310051 Hangzhou China
| | - Jin Pan
- Department of NCDs Control and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, No. 3399, Binsheng Road, Zhejiang, 310051 Hangzhou China
| | - Ru-Ying Hu
- Department of NCDs Control and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, No. 3399, Binsheng Road, Zhejiang, 310051 Hangzhou China
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17
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Adejumo EN, Adejumo AO, Azenabor A, Ekun AO, Enitan SS, Adebola OK, Ogundahunsi OA. Anthropometric parameter that best predict metabolic syndrome in South west Nigeria. Diabetes Metab Syndr 2019; 13:48-54. [PMID: 30641748 DOI: 10.1016/j.dsx.2018.08.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Accepted: 08/09/2018] [Indexed: 12/11/2022]
Abstract
AIM This study compared the ability of anthropometric parameters to predict Metabolic Syndrome (MetS). METHODS Eleven anthropometric parameters: waist circumference (WC), body mass index (BMI), waist-to-height ratio (WHtR), a body shape index (ABSI), body roundness index (BRI), visceral adiposity index (VAI), abdominal volume index (AVI), Conicity Index (CI), body adiposity index (BAI), lipid accumulation product (LAP) and waist circumference-triglyceride index (WTI) were measured and calculated in apparently healthy subjects with and without MetS. A receiver operating characteristic (ROC) curve was applied to assess their ability to predict MetS. RESULTS Of the 535 subjects recruited 23% had MetS. WC had the largest area under the curve (AUC) in both men (0.814 95% CI 0.721-0.907) and women (0.819 95%CI 0.771-0.867). This did not differ from the AUC of BMI, WHtR, BRI, CI, BAI, LAP in men and BMI, WHtR, BAI, LAP, VAI and WTI in women (P > 0.05). The cutoff point for WC was 89.5 cm and 91.8 cm in men and women respectively. The AUC of WC was the largest in the 40-49 and 60 years and above age groups while the AUC of LAP was the largest for age groups 30-39 and 50-59 years. CONCLUSION Of the 11 anthropometric parameters assessed, the WC was the best at predicting MetS in both men and women. There is need to ascertain the cutoff point and establish landmark for measuring WC especially for the sub Saharan region.
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Affiliation(s)
- Esther Ngozi Adejumo
- Department of Medical Laboratory Science, Babcock University, Ilishan-Remo, Ogun State, Nigeria.
| | - Adedeji Olusola Adejumo
- Department of Community Health and Primary Health Care, Lagos State University Teaching Hospital, Ikeja, Lagos, Nigeria
| | - Alfred Azenabor
- Department of Medical Laboratory Science, University of Lagos, Lagos, Nigeria
| | | | - Seyi Samson Enitan
- Department of Medical Laboratory Science, Babcock University, Ilishan-Remo, Ogun State, Nigeria
| | - Olayimika Kehinde Adebola
- Research, Innovation and International Cooperation Department, Babcock University, Ilisan-Remo, Ogun State, Nigeria
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Bell RA, Chen H, Saldana S, Bertoni AG, Effoe VS, Hairston KG, Kalyani RR, Norwood AF. Comparison of Measures of Adiposity and Cardiovascular Disease Risk Factors Among African American Adults: the Jackson Heart Study. J Racial Ethn Health Disparities 2018; 5:1230-1237. [PMID: 29427252 PMCID: PMC6085149 DOI: 10.1007/s40615-018-0469-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 01/31/2018] [Accepted: 02/02/2018] [Indexed: 10/18/2022]
Abstract
Obesity, particularly central adiposity, is a well-established risk factor for cardiovascular disease (CVD). Waist circumference (WC) is measured in numerous epidemiologic studies as a relatively simple indicator of central adiposity. However, recently, investigators have considered a measure that takes height into consideration, waist-to-height ratio (WHtR) as a more sensitive predictor of CVD. A limited number of studies have examined the association between various measures of central adiposity and obesity with CVD, but there is a dearth of information on this topic focused specifically on African American adults. Given the high rates of cardiovascular disease and metabolic risk factors in this population, it is important to develop validated, easy-to-measure indicators of CVD risk for clinical use. Data from 4758 African American adults participating in the baseline visit of the Jackson Heart Study with available risk factor data were examined, with three measures of body habitus (body mass index (BMI), WC, and WHtR) and five CVD risk factors (HDL and LDL cholesterol, triglycerides, diabetes, and hypertension), the latter also categorized into multiple (2+) risk factors present. C-statistics for waist circumference (WC), BMI, and WHtR were computed and compared for each model to assess their discriminant abilities. WHtR was a stronger correlate of HDL cholesterol, triglycerides, diabetes, hypertension, and multiple risk factors compared to BMI, and was a stronger correlate of HDL cholesterol when compared to WC. These data indicate that, for African American adults, WHtR may be more appropriate measure to identify those at elevated risk for CVD.
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Affiliation(s)
- Ronny A Bell
- Department of Public Health, East Carolina University, 600 Moye Boulevard, Mailstop 660, Greenville, NC, 27834, USA.
| | - Haiying Chen
- Department of Biostatistical Sciences, Division of Public Health Sciences, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC, 27157-1063, USA
| | - Santiago Saldana
- Department of Biostatistical Sciences, Division of Public Health Sciences, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC, 27157-1063, USA
| | - Alain G Bertoni
- Department of Epidemiology and Prevention, Division of Public Health Sciences, Maya Angelou Center for Health Equity, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC, 27157-1063, USA
| | - Valery S Effoe
- Department of Medicine, Division of General Internal Medicine, Morehouse School of Medicine, 720 Westview Drive S.W., Atlanta, GA, 30310, USA
| | - Kristen G Hairston
- Section on Endocrinology and Metabolism, Maya Angelou Center for Health Equity, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC, 27157-1063, USA
| | - Rita R Kalyani
- Johns Hopkins Center on Aging and Health, Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins School of Medicine, 1830 East Monument Street, Suite 333, Baltimore, MD, 21287, USA
| | - Arnita F Norwood
- Department of Medicine, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216, USA
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19
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Rådholm K, Chalmers J, Ohkuma T, Peters S, Poulter N, Hamet P, Harrap S, Woodward M. Use of the waist-to-height ratio to predict cardiovascular risk in patients with diabetes: Results from the ADVANCE-ON study. Diabetes Obes Metab 2018; 20:1903-1910. [PMID: 29603537 DOI: 10.1111/dom.13311] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 03/22/2018] [Accepted: 03/25/2018] [Indexed: 12/17/2022]
Abstract
AIMS Patients with type 2 diabetes have a high risk of cardiovascular disease (CVD). Central obesity has been particularly associated with this risk relationship. We aimed to evaluate waist to height ratio (WHtR) as a predictor of risk in such patients. METHODS WHtR was evaluated as a predictor of the risk of CVD and mortality amongst 11 125 participants with type 2 diabetes in the ADVANCE and ADVANCE-ON studies, and was compared with body mass index (BMI), waist circumference and waist hip ratio (WHR). Primary outcome was a composite of death from CVD, non-fatal myocardial infarction or non-fatal stroke. Secondary outcomes were myocardial infarction, stroke, cardiovascular death and death from any cause. Cox models were used, with bootstrapping to compare associations between anthropometric measures for the primary outcome. RESULTS Median follow-up time was 9.0 years. There was a positive association between WHtR and adverse outcomes. The hazard ratio (HR) (confidence interval), per SD higher WHtR, was 1.16 (1.11-1.22) for the primary endpoint, with no heterogeneity by sex or region, but a stronger effect in individuals aged 66 years or older. The other 3 anthropometric measurements showed similar associations, although there was evidence that WHtR marginally outperformed BMI and WHR. Based on commonly used BMI cut-points, the equivalent WHtR cut-points were estimated to be 0.55 and 0.6, with no evidence of a difference across subgroups. CONCLUSIONS In patients with diabetes, WHtR is a useful indicator of future adverse risk, with similar effects in different population subgroups.
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Affiliation(s)
- Karin Rådholm
- Division of Community Medicine, Primary Care, Department of Medicine and Health Sciences, Faculty of Health Sciences, Linköping University, Department of Local Care West, County Council of Östergötland, Linköping, Sweden
- The George Institute for Global Health, University of New South Wales, Sydney, Australia
| | - John Chalmers
- The George Institute for Global Health, University of New South Wales, Sydney, Australia
| | - Toshiaki Ohkuma
- The George Institute for Global Health, University of New South Wales, Sydney, Australia
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Sanne Peters
- The George Institute for Global Health, University of Oxford, Oxford, UK
| | - Neil Poulter
- International Centre for Circulatory Health, Imperial College, London, UK
| | - Pavel Hamet
- Montreal Diabetes Research Centre, Centre Hospitalier de l'Université de Montréal, Montreal, Québec, Canada
| | - Stephen Harrap
- The University of Melbourne and Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - Mark Woodward
- The George Institute for Global Health, University of New South Wales, Sydney, Australia
- The George Institute for Global Health, University of Oxford, Oxford, UK
- Department of Epidemiology, Johns Hopkins University, Baltimore, Maryland
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Ekoru K, Young EH, Dillon DG, Gurdasani D, Stehouwer N, Faurholt-Jepsen D, Levitt NS, Crowther NJ, Nyirenda M, Njelekela MA, Ramaiya K, Nyan O, Adewole OO, Anastos K, Compostella C, Dave JA, Fourie CM, Friis H, Kruger IM, Longenecker CT, Maher DP, Mutimura E, Ndhlovu CE, Praygod G, Pefura Yone EW, Pujades-Rodriguez M, Range N, Sani MU, Sanusi M, Schutte AE, Sliwa K, Tien PC, Vorster EH, Walsh C, Gareta D, Mashili F, Sobngwi E, Adebamowo C, Kamali A, Seeley J, Smeeth L, Pillay D, Motala AA, Kaleebu P, Sandhu MS. HIV treatment is associated with a two-fold higher probability of raised triglycerides: Pooled Analyses in 21 023 individuals in sub-Saharan Africa. Glob Health Epidemiol Genom 2018; 3:e7. [PMID: 29881632 PMCID: PMC5985947 DOI: 10.1017/gheg.2018.7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 04/08/2018] [Accepted: 04/10/2018] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Anti-retroviral therapy (ART) regimes for HIV are associated with raised levels of circulating triglycerides (TG) in western populations. However, there are limited data on the impact of ART on cardiometabolic risk in sub-Saharan African (SSA) populations. METHODS Pooled analyses of 14 studies comprising 21 023 individuals, on whom relevant cardiometabolic risk factors (including TG), HIV and ART status were assessed between 2003 and 2014, in SSA. The association between ART and raised TG (>2.3 mmol/L) was analysed using regression models. FINDINGS Among 10 615 individuals, ART was associated with a two-fold higher probability of raised TG (RR 2.05, 95% CI 1.51-2.77, I2=45.2%). The associations between ART and raised blood pressure, glucose, HbA1c, and other lipids were inconsistent across studies. INTERPRETATION Evidence from this study confirms the association of ART with raised TG in SSA populations. Given the possible causal effect of raised TG on cardiovascular disease (CVD), the evidence highlights the need for prospective studies to clarify the impact of long term ART on CVD outcomes in SSA.
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Affiliation(s)
- K. Ekoru
- Department of Medicine, University of Cambridge, Cambridge, UK
- Global Health and Populations Group, Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK
| | - E. H. Young
- Department of Medicine, University of Cambridge, Cambridge, UK
- Global Health and Populations Group, Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK
| | - D. G. Dillon
- Weill Cornell Medical College, New York City, New York, USA
| | - D. Gurdasani
- Department of Medicine, University of Cambridge, Cambridge, UK
- Global Health and Populations Group, Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK
| | - N. Stehouwer
- University Hospitals Case Medical Center, Cleveland, Ohio, USA
| | - D. Faurholt-Jepsen
- Department of Infectious Diseases, University of Copenhagen (Rigshospitalet), Copenhagen, Denmark
| | - N. S. Levitt
- Division of Diabetic Medicine and Endocrinology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - N. J. Crowther
- Department of Chemical Pathology, National Health Laboratory Service, University of the Witwatersrand Medical School, Johannesburg, South Africa
| | - M. Nyirenda
- Malawi Epidemiology and Intervention Research Unit, Malawi, Lilongwe
| | - M. A. Njelekela
- Department of Physiology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - K. Ramaiya
- Shree Hindu Mandal Hospital, Dar es Salaam, Tanzania
| | - O. Nyan
- Royal Victoria Teaching Hospital, School of Medicine, University of The Gambia, Banjul, The Gambia
| | - O. O. Adewole
- Department of Medicine, Obafemi Awolowo University, Ile Ife, Nigeria
| | - K. Anastos
- Albert Einstein College of Medicine, Bronx NY, USA
| | - C. Compostella
- Department of Medicine, University of Padua, Padua, Italy
| | - J. A. Dave
- Division of Diabetic Medicine and Endocrinology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - C. M. Fourie
- HART (Hypertension in Africa Research Team), North-West University, Potchefstroom, South Africa
| | - H. Friis
- Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Denmark
| | - I. M. Kruger
- Africa Unit for Transdisciplinary Health Research (AUTHeR), North-West University, Potchefstroom, South Africa
| | | | - D. P. Maher
- Special Programme for Research & Training in Tropical Diseases (TDR), World Health Organization, Geneva, Switzerland
| | - E. Mutimura
- Albert Einstein College of Medicine, Bronx NY, USA
| | - C. E. Ndhlovu
- Clinical Epidemiology Resource Training Centre, University of Zimbabwe College of Health Sciences, Harare, Zimbabwe
| | - G. Praygod
- National Institute for Medical Research, Tanzania, Dar es Salaam
| | | | - M. Pujades-Rodriguez
- Epicentre, Médecins Sans Frontières, Paris, France
- Department of Epidemiology and Public Health, University College of London, Clinical Epidemiology Group, London, UK
| | - N. Range
- National Institute for Medical Research, Tanzania, Dar es Salaam
| | - M. U. Sani
- Cardiology Unit, Department of Medicine, Aminu Kano Teaching Hospital, Kano, Nigeria
| | - M. Sanusi
- Cardiology Unit, Department of Medicine, Aminu Kano Teaching Hospital, Kano, Nigeria
| | - A. E. Schutte
- HART (Hypertension in Africa Research Team), North-West University, Potchefstroom, South Africa
- MRC Unit for Hypertension and Cardiovascular Disease, North-West University, Potchefstroom, South Africa
| | - K. Sliwa
- Soweto Cardiovascular Research Unit, Chris Hani Baragwanath Hospital, University of the Witwatersrand, Johannesburg, South Africa
| | - P. C. Tien
- Department of Medicine, University of California, San Francisco, USA
| | - E. H. Vorster
- Faculty of Health Sciences, North-West University, Potchefstroom, South Africa
| | - C. Walsh
- Department of Nutrition and Dietetics, University of the Free State, Bloemfontein, South Africa
| | - D. Gareta
- Africa Health Research Institute, University of KwaZulu-Natal, Durban, South Africa
| | - F. Mashili
- National Institute for Medical Research, Tanzania, Dar es Salaam
| | - E. Sobngwi
- Faculty of Medicine and Biomedical Sciences, University of Yaoundé 1, Cameroon, Yaoundé
| | - C. Adebamowo
- Institute of Human Virology, Abuja, Nigeria
- Department of Epidemiology and Public Health, Institute of Human Virology and Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, USA
| | - A. Kamali
- MRC/UVRI Uganda Research Unit on AIDS, Entebbe, Uganda
| | - J. Seeley
- MRC/UVRI Uganda Research Unit on AIDS, Entebbe, Uganda
| | - L. Smeeth
- Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, UK
| | - D. Pillay
- Africa Health Research Institute, University of KwaZulu-Natal, Durban, South Africa
| | - A. A. Motala
- Department of Diabetes and Endocrinology, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - P. Kaleebu
- MRC/UVRI Uganda Research Unit on AIDS, Entebbe, Uganda
| | - M. S. Sandhu
- Department of Medicine, University of Cambridge, Cambridge, UK
- Global Health and Populations Group, Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK
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21
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Amirabdollahian F, Haghighatdoost F. Anthropometric Indicators of Adiposity Related to Body Weight and Body Shape as Cardiometabolic Risk Predictors in British Young Adults: Superiority of Waist-to-Height Ratio. J Obes 2018; 2018:8370304. [PMID: 30515323 PMCID: PMC6236774 DOI: 10.1155/2018/8370304] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 09/07/2018] [Accepted: 10/02/2018] [Indexed: 02/06/2023] Open
Abstract
Frequently reported poor dietary habits of young adults increase their risk of metabolic syndrome (MetS). Excess adiposity is the most established predictor of MetS, and numerous anthropometric measures have been proposed as proxy indicators of adiposity. We aimed to assess prevalence of MetS in young adult population and to make comparison between weight- and shape-oriented measures of adiposity to identify the best index in association with measured body fat and as a risk predictor for MetS. Healthy males and females aged 18-25 years from the Northwest of England were recruited using convenience sampling (n=550). As part of the assessment of the overall health of young adults, the biochemical variables and adiposity measures BMI, waist circumference (WC), waist-to-height ratio (WHtR), waist-to-hip ratio (WHR), new BMI, Body Adiposity Index (BAI), Clinica Universidad de Navarra-Body Adiposity Estimator (CUN-BAE), and A Body Shape Index (ABSI) were assessed. Linear regression analysis was used to investigate the association between the proxy indices of adiposity and measured percentage body fat. The odds ratio with 95% confidence interval was used to investigate the relationship between cardiometabolic (CM) risk factors and proxy measures of adiposity. The discriminatory power of these measures for diagnosis of MetS was investigated using area under the receiver operating characteristic curve. Body weight-related indicators of adiposity, particularly CUN-BAE, had stronger association with measured body fat compared with body shape-related indices. In relation with MetS, body shape-related indices, particularly elevated WC and WHtR, had stronger associations with CM risk compared with body weight-related measures. Amongst all indices, the best predictor for CM risk was WHtR, while ABSI had the weakest correlation with body fat, MetS, and CM risk. Indices directly associated with WC and specifically WHtR had greater diagnostic power in detection of CM risk in young adults.
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Affiliation(s)
| | - Fahimeh Haghighatdoost
- Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
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22
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Obirikorang C, Obirikorang Y, Acheampong E, Anto EO, Toboh E, Asamoah EA, Amakwaa B, Batu EN, Brenya P. Association of Wrist Circumference and Waist-to-Height Ratio with Cardiometabolic Risk Factors among Type II Diabetics in a Ghanaian Population. J Diabetes Res 2018; 2018:1838162. [PMID: 29670914 PMCID: PMC5836458 DOI: 10.1155/2018/1838162] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 11/24/2017] [Accepted: 12/27/2017] [Indexed: 01/15/2023] Open
Abstract
The study determined the association of wrist circumference (WrC) and waist-to-height ratio (WHtR) with cardiometabolic risk factors among diabetics in a Ghanaian population. This cross-sectional study involved 384 diabetic patients at Begoro District Hospital, Ghana. Blood pressure, anthropometrics, and biochemical indices were measured. The overall prevalence of dyslipidaemia, metabolic syndrome (MetS), and hypertension was 42.4%, 76.3%, and 39.8%, respectively. The optimum cut-off range of WrC to identify individuals at increased cardiometabolic risk was 17.5 to -17.8 cm for men and 16.0 to 16.7 cm for women while that of WHtR was 0.52 to 0.61 for men and 0.53 to 0.59 for women. WrC for women was a significant independent predictor for MetS [aOR = 3.0 (1.39-6.72), p = 0.005] and systolic blood pressure [aOR = 2.08 (1.17-3.68), p = 0.012]. WHtR was a significant positive predictor for triglycerides [aOR = 3.23 (0.10-3.82), p = 0.001] for women. Using Framingham risk scores, 61% of the subjects had elevated 10-year risk of developing cardiovascular diseases (CVDs), with no significant difference in gender prevalence. WrC [aOR = 6.13 (0.34-111.4), p = 0.107] and WHtR [aOR = 2.52 (0.42-15.02), p = 0.309] were associated with statistically insignificant increased odds of moderate-to-high risk of developing CVDs in 10 years. The use of gender-specific cut-offs for WrC and WHtR may offer putative markers for early identification of CRFs.
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Affiliation(s)
- Christian Obirikorang
- Department of Molecular Medicine, School of Medical Sciences, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana
| | - Yaa Obirikorang
- Department of Nursing, Faculty of Health and Allied Sciences, Garden City University College (GCUC), Kenyasi, Kumasi, Ghana
| | - Emmanuel Acheampong
- Department of Molecular Medicine, School of Medical Sciences, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana
| | - Enoch Odame Anto
- Department of Molecular Medicine, School of Medical Sciences, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia
| | - Emmanuel Toboh
- Diagnostic Unit, Dansoman Polyclinic, Ghana Health Service, Accra, Ghana
| | - Evans Adu Asamoah
- Department of Medical Laboratory Technology, Faculty of Allied Health Sciences, KNUST, Kumasi, Ghana
| | - Bright Amakwaa
- Department of Molecular Medicine, School of Medical Sciences, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana
| | - Emmanuella Nsenbah Batu
- Department of Molecular Medicine, School of Medical Sciences, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana
| | - Peter Brenya
- Department of Molecular Medicine, School of Medical Sciences, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana
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23
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Ekoru K, Murphy GAV, Young EH, Delisle H, Jerome CS, Assah F, Longo–Mbenza B, Nzambi JPD, On'Kin JBK, Buntix F, Muyer MC, Christensen DL, Wesseh CS, Sabir A, Okafor C, Gezawa ID, Puepet F, Enang O, Raimi T, Ohwovoriole E, Oladapo OO, Bovet P, Mollentze W, Unwin N, Gray WK, Walker R, Agoudavi K, Siziya S, Chifamba J, Njelekela M, Fourie CM, Kruger S, Schutte AE, Walsh C, Gareta D, Kamali A, Seeley J, Norris SA, Crowther NJ, Pillay D, Kaleebu P, Motala AA, Sandhu MS. Deriving an optimal threshold of waist circumference for detecting cardiometabolic risk in sub-Saharan Africa. Int J Obes (Lond) 2017; 42:ijo2017240. [PMID: 29087388 PMCID: PMC5880575 DOI: 10.1038/ijo.2017.240] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Revised: 08/12/2017] [Accepted: 09/04/2017] [Indexed: 02/02/2023]
Abstract
BACKGROUND Waist circumference (WC) thresholds derived from western populations continue to be used in sub-Saharan Africa (SSA) despite increasing evidence of ethnic variation in the association between adiposity and cardiometabolic disease and availability of data from African populations. We aimed to derive a SSA-specific optimal WC cut-point for identifying individuals at increased cardiometabolic risk. METHODS We used individual level cross-sectional data on 24 181 participants aged ⩾15 years from 17 studies conducted between 1990 and 2014 in eight countries in SSA. Receiver operating characteristic curves were used to derive optimal WC cut-points for detecting the presence of at least two components of metabolic syndrome (MS), excluding WC. RESULTS The optimal WC cut-point was 81.2 cm (95% CI 78.5-83.8 cm) and 81.0 cm (95% CI 79.2-82.8 cm) for men and women, respectively, with comparable accuracy in men and women. Sensitivity was higher in women (64%, 95% CI 63-65) than in men (53%, 95% CI 51-55), and increased with the prevalence of obesity. Having WC above the derived cut-point was associated with a twofold probability of having at least two components of MS (age-adjusted odds ratio 2.6, 95% CI 2.4-2.9, for men and 2.2, 95% CI 2.0-2.3, for women). CONCLUSION The optimal WC cut-point for identifying men at increased cardiometabolic risk is lower (⩾81.2 cm) than current guidelines (⩾94.0 cm) recommend, and similar to that in women in SSA. Prospective studies are needed to confirm these cut-points based on cardiometabolic outcomes.International Journal of Obesity advance online publication, 31 October 2017; doi:10.1038/ijo.2017.240.
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Affiliation(s)
- K Ekoru
- Sandhu Group, Department of Medicine, University of Cambridge, Cambridge, UK
- Global Health and Populations Group, Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK
| | - G A V Murphy
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - E H Young
- Sandhu Group, Department of Medicine, University of Cambridge, Cambridge, UK
- Global Health and Populations Group, Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK
| | - H Delisle
- Department of Nutrition, Faculty of Medicine, University of Montreal, Montreal, Canada
| | - C S Jerome
- Regional Institute of Public Health, University of Abomey-Calavi, Cotonou, Benin
| | - F Assah
- Department of Public Health, Faculty of Medicine and Biomedical Sciences, University of Yaounde I, Yaounde, Cameroon
| | - B Longo–Mbenza
- Faculty of Health Sciences, Walter Sisulu University, Eastern Cape, South Africa
| | - J P D Nzambi
- Department of Basic Sciences, Unit of Clinical Pharmacology and Pharmacovigilance, Faculty of Medicine, University of Kinshasa, Kinshasa, DR Congo
| | - J B K On'Kin
- Department of Internal Medicine, Faculty of Medicine, University of Kinshasa, Kinshasa, DR Congo
| | - F Buntix
- Department of General Practice, KU Leuven, Leuven, Belgium
| | - M C Muyer
- Department of Public Health, University of Kinshasa, Kinshasa, DR Congo
| | - D L Christensen
- Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - C S Wesseh
- Ministry of Health and Social Welfare, Monrovia, Liberia
| | - A Sabir
- Department of Medicine, Usmanu Danfodiyo University Teaching Hospital, Sokoto, Nigeria
| | - C Okafor
- Department of Medicine & Physiology, Faculty of Medical Sciences, University of Nigeria, Enugu Campus/University of Nigeria Teaching Hospital, Ituku Ozalla, Enugu, Nigeria
| | - I D Gezawa
- Department of Medicine, College of Health Sciences, Bayero University Kano/Aminu Kano Teaching Hospital, Kano State, Kano, Nigeria
| | - F Puepet
- Department of Medicine, College of Medical Sciences, University of Jos, Jos, Nigeria
| | - O Enang
- Department of Internal Medicine, University of Calabar/University of Calabar Teaching Hospital, Calabar, Nigeria
| | - T Raimi
- Department of Medicine, Ekiti State University, Ado-Ekiti, Nigeria
| | - E Ohwovoriole
- Department of Medicine, College of Medicine, University of Lagos, Lagos, Nigeria
| | - O O Oladapo
- Division of Cardiovascular Medicine, Department of Medicine (University College Hospital), College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - P Bovet
- Institute of Social and Preventive Medicine, University of Lausanne, Lausanne, Switzerland
| | - W Mollentze
- University of the Free State, Bloemfontein, Republic of South Africa
| | - N Unwin
- MRC Epidemiology Unit, University of Cambridge, Cambridge, UK
| | - W K Gray
- Northumbria Healthcare NHS Foundation Trust, North Tyneside General Hospital, North Shields, Tyne and Wear, UK
| | - R Walker
- Northumbria Healthcare NHS Foundation Trust, North Tyneside General Hospital, North Shields, Tyne and Wear, UK
- Institute of Health and Society, Newcastle University, Newcastle, UK
| | - K Agoudavi
- National NCD Program, Ministry Of Health, Lome, Togo
| | - S Siziya
- School of Medicine, The Copperbelt University, Ndola, Zambia
| | - J Chifamba
- Physiology Department, University of Zimbabwe, College of Health Sciences, Harare, Zimbabwe
| | - M Njelekela
- Department of Physiology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania
| | - C M Fourie
- HART (Hypertension in Africa Research Team), North-West University, Potchefstroom, South Africa
| | - S Kruger
- Africa Unit for Transdisciplinary Health Research (AUTHeR), North-West University, Potchefstroom, South Africa
- MRC Unit for Hypertension and Cardiovascular Disease, North-West University, Potchefstroom, South Africa
| | - A E Schutte
- HART (Hypertension in Africa Research Team), North-West University, Potchefstroom, South Africa
- MRC Unit for Hypertension and Cardiovascular Disease, North-West University, Potchefstroom, South Africa
| | - C Walsh
- Department of Nutrition and Dietetics, University of the Free State, Bloemfontein, South Africa
| | - D Gareta
- Wellcome Trust Africa Centre for Health and Population Studies, University of KwaZulu-Natal, KwaZulu-Natal, South Africa
| | - A Kamali
- MRC/UVRI Uganda Research Unit on AIDS, Entebbe, Uganda
| | - J Seeley
- MRC/UVRI Uganda Research Unit on AIDS, Entebbe, Uganda
| | - S A Norris
- MRC/Wits Developmental Pathways for Health Research Unit (DPHRU), University of the Witwatersrand, Johannesburg, South Africa
| | - N J Crowther
- Department of Chemical Pathology, National Health Laboratory Service, University of the Witwatersrand Medical School, Johannesburg, South Africa
| | - D Pillay
- Wellcome Trust Africa Centre for Health and Population Studies, University of KwaZulu-Natal, KwaZulu-Natal, South Africa
| | - P Kaleebu
- MRC/UVRI Uganda Research Unit on AIDS, Entebbe, Uganda
| | - A A Motala
- Department of Diabetes and Endocrinology, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
| | - M S Sandhu
- Sandhu Group, Department of Medicine, University of Cambridge, Cambridge, UK
- Global Health and Populations Group, Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK
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24
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Sun H, Hou J, Zhou Y, Yang Y, Cheng J, Xu T, Xiao L, Chen W, Yuan J. Dose-response relationship between urinary polycyclic aromatic hydrocarbons metabolites and urinary 8-hydroxy-2'-deoxyguanosine in a Chinese general population. CHEMOSPHERE 2017; 174:506-514. [PMID: 28189895 DOI: 10.1016/j.chemosphere.2017.01.104] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Revised: 01/18/2017] [Accepted: 01/20/2017] [Indexed: 06/06/2023]
Abstract
Association of exposure to polycyclic aromatic hydrocarbons (PAHs) with increased urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG) formation has been reported in occupational population and children. However, studies on the association between them in general population are limited. A total of 1864 eligible subjects from the baseline Wuhan participants of the Wuhan-Zhuhai Cohort Study (n = 3053) were included in this study, after excluding individuals with certain disease and missing data on urinary monohydroxy PAHs (OH-PAHs) and 8-OHdG levels. Urinary monohydroxy PAHs and 8-OHdG levels were measured by gas chromatography-mass spectrometry and high performance liquid chromatography-electrochemical detection, respectively. Association of urinary OH-PAHs with urinary 8-OHdG was analyzed by multiple linear regression analysis. We found a dose-dependent relationship between urinary PAHs metabolites and urinary 8-OHdG (p < 0.05 for all). Furthermore, more evidence for the association of total concentrations of urinary OH-PAHs with 8-OHdG levels were observed in individuals with normal body mass index or central obesity (p < 0.01 for all). There was a dose-dependent relationship between urinary OH-PAHs levels and urinary 8-OHdG levels among a general Chinese population. Exposure to background PAHs may have a greater influence on urinary 8-OHdG levels in individuals with central obesity.
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Affiliation(s)
- Huizhen Sun
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Jian Hou
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Yun Zhou
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Yuqing Yang
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Juan Cheng
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Tian Xu
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Lili Xiao
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Weihong Chen
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Jing Yuan
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, China.
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25
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Schutte AE, Botha S, Fourie CMT, Gafane-Matemane LF, Kruger R, Lammertyn L, Malan L, Mels CMC, Schutte R, Smith W, van Rooyen JM, Ware LJ, Huisman HW. Recent advances in understanding hypertension development in sub-Saharan Africa. J Hum Hypertens 2017; 31:491-500. [PMID: 28332510 DOI: 10.1038/jhh.2017.18] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 01/16/2017] [Accepted: 02/03/2017] [Indexed: 12/13/2022]
Abstract
Consistent reports indicate that hypertension is a particularly common finding in black populations. Hypertension occurs at younger ages and is often more severe in terms of blood pressure levels and organ damage than in whites, resulting in a higher incidence of cardiovascular disease and mortality. This review provides an outline of recent advances in the pathophysiological understanding of blood pressure elevation and the consequences thereof in black populations in Africa. This is set against the backdrop of populations undergoing demanding and rapid demographic transition, where infection with the human immunodeficiency virus predominates, and where under and over-nutrition coexist. Collectively, recent findings from Africa illustrate an increased lifetime risk to hypertension from foetal life onwards. From young ages black populations display early endothelial dysfunction, increased vascular tone and reactivity, microvascular structural adaptions as well as increased aortic stiffness resulting in elevated central and brachial blood pressures during the day and night, when compared to whites. Together with knowledge on the contributions of sympathetic activation and abnormal renal sodium handling, these pathophysiological adaptations result in subclinical and clinical organ damage at younger ages. This overall enhanced understanding on the determinants of blood pressure elevation in blacks encourages (a) novel approaches to assess and manage hypertension in Africa better, (b) further scientific discovery to develop more effective prevention and treatment strategies and
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Affiliation(s)
- A E Schutte
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa.,South African Medical Research Council: Unit for Hypertension and Cardiovascular Disease, North-West University, Potchefstroom, South Africa
| | - S Botha
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa
| | - C M T Fourie
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa
| | - L F Gafane-Matemane
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa
| | - R Kruger
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa
| | - L Lammertyn
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa
| | - L Malan
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa
| | - C M C Mels
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa
| | - R Schutte
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa.,South African Medical Research Council: Unit for Hypertension and Cardiovascular Disease, North-West University, Potchefstroom, South Africa.,Department of Medicine and Healthcare Science, Anglia Ruskin University, Chelmsford, UK
| | - W Smith
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa
| | - J M van Rooyen
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa
| | - L J Ware
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa
| | - H W Huisman
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa.,South African Medical Research Council: Unit for Hypertension and Cardiovascular Disease, North-West University, Potchefstroom, South Africa
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26
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Kazlauskaite R, Avery-Mamer EF, Li H, Chataut CP, Janssen I, Powell LH, Kravitz HM. Race/ethnic comparisons of waist-to-height ratio for cardiometabolic screening: The study of women's health across the nation. Am J Hum Biol 2016; 29. [PMID: 27801534 DOI: 10.1002/ajhb.22909] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 06/16/2016] [Accepted: 08/06/2016] [Indexed: 02/03/2023] Open
Abstract
OBJECTIVE To compare the performance of waist-to-height ratio as a screening tool for cardiometabolic conditions - hypertension, prediabetes/diabetes, dyslipidemia, and subclinical inflammation - in 5 race/ethnic groups of mid-life women. METHODS Waist-to-height ratio and 4 cardiometabolic conditions were assessed in 3033 premenopausal midlife women (249 Hispanic, 226 Chinese, 262 Japanese, 1435 European-American, and 861 African American). The areas under the receiver operating characteristic curve (AUROC) were compared across the five race/ethnic groups using waist-to-height ratio to determine the likelihood of the four cardiometabolic conditions. RESULTS The performance of waist-to-height ratio to detect one or more cardiometabolic conditions was comparable among all race/ethnic groups (AUROC > 0.60, p = 0.252), and was good/fair (AUROC > 0.60) when hypertension, prediabetes/diabetes, dyslipidemia, or subclinical inflammation were analyzed separately. The performance of waist-to-height ratio of 0.50 was skewed towards higher specificity among groups with low prevalence of cardiometabolic conditions and lower median waist-to-height ratio, and towards higher sensitivity among groups with high prevalence of cardiometabolic conditions and higher median waist-to-height ratio. CONCLUSIONS Waist-to-height ratio can be used for community-based screening of mid-life women who may need secondary prevention for cardiometabolic conditions. A simple public health message: "Keep your waist to less than half of your height" applies to midlife women.
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Affiliation(s)
- Rasa Kazlauskaite
- Department of Preventive Medicine, Rush University Medical Center, Chicago, IL.,Department of Medicine, Rush University Medical Center, Chicago, IL
| | | | - Hong Li
- Department of Preventive Medicine, Rush University Medical Center, Chicago, IL
| | - Chandra P Chataut
- Department of Medicine, Rush University Medical Center, Chicago, IL.,Department of Medicine, John H. Stroger Hospital of Cook County, Chicago, IL
| | - Imke Janssen
- Department of Preventive Medicine, Rush University Medical Center, Chicago, IL
| | - Lynda H Powell
- Department of Preventive Medicine, Rush University Medical Center, Chicago, IL
| | - Howard M Kravitz
- Department of Preventive Medicine, Rush University Medical Center, Chicago, IL.,Department of Psychiatry, Rush University Medical Center, Chicago, IL
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27
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Macia E, Gueye L, Duboz P. Hypertension and Obesity in Dakar, Senegal. PLoS One 2016; 11:e0161544. [PMID: 27622534 PMCID: PMC5021383 DOI: 10.1371/journal.pone.0161544] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Accepted: 08/08/2016] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Cardiovascular disease is a major public health problem in many sub-Saharan African countries, but data on the main cardiovascular risk factors-hypertension and obesity-are almost nonexistent in Senegal. The aims of this study were therefore (i) to report the prevalence, awareness, treatment and control of hypertension among adults in Dakar, (ii) to assess the prevalence of general and central obesity, and (iii) to analyze the association between hypertension and general and central obesity. METHODS A cross-sectional survey was carried out in 2015 on a representative sample of 1000 dwellers of the Senegalese capital aged 20-90. RESULTS The overall prevalence of hypertension was 24.7%. Among hypertensive respondents, 28.4% were aware of their condition; 16.0% were on antihypertensive medication; 4.9% had controlled blood pressure. The frequency of doctor visits was a significant predictor of awareness (OR = 2.16; p<0.05) and treatment (OR = 2.57; p<0.05) of hypertension. The prevalence of underweight, overweight and general obesity were 12.6%, 19.2% and 9.7% respectively. The prevalence of central obesity was 26% by WC and 39.8% by WHtR. General obesity and central obesity by WHtR significantly predicted HTN among men and women, but not central obesity by WC. CONCLUSIONS This study has demonstrated a high prevalence of hypertension in Dakar and a high prevalence of obesity among women-particularly among older women. The awareness, treatment, and effective control of hypertension are unacceptably low. The blood pressure of women with general obesity, and men with central obesity, in the community should be monitored regularly to limit the burden of cardiovascular disease in Senegal.
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Affiliation(s)
- Enguerran Macia
- UMI 3189 Environnement, santé, sociétés (CNRS / Université Cheikh Anta Diop / Université de Bamako / CNRST Burkina-Faso), Faculté de Médecine, de Pharmacie et d’Odontostomatologie, Dakar, Senegal
| | - Lamine Gueye
- UMI 3189 Environnement, santé, sociétés (CNRS / Université Cheikh Anta Diop / Université de Bamako / CNRST Burkina-Faso), Faculté de Médecine, de Pharmacie et d’Odontostomatologie, Dakar, Senegal
| | - Priscilla Duboz
- UMR 7268 Anthropologie, Droit, Ethique et Santé (CNRS / Aix-Marseille Université / EFS), Faculté de Médecine, Secteur Nord, CS 80011, Marseille Cedex 15, France
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Sodium and potassium intake in South Africa: an evaluation of 24-hour urine collections in a white, black, and Indian population. ACTA ACUST UNITED AC 2016; 10:829-837. [PMID: 27720143 DOI: 10.1016/j.jash.2016.08.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 08/15/2016] [Accepted: 08/19/2016] [Indexed: 11/20/2022]
Abstract
Limited number of studies on salt intake has been conducted in the South Africa. The present study established the sodium and potassium excretion (24-hour urine collection) of three different South African populations. In total, 692 successful 24-hour urine collections were analyzed for sodium, potassium, and iodine levels. The median sodium and potassium excretion was 122.9 and 33.5 mmol/d, respectively, and the median salt intake was 7.2 g/d. The majority (92.8%) of the population did not meet the recommended potassium intake/d, and 65.6% consumed more than 6 g of salt/d. Potassium excretion showed a linear relationship with salt intake (P-trend ≤ .001). The median sodium-to-potassium ratio was 3.5. These findings support the South African government's sodium reduction legislation, as well as global initiatives. More consideration should be given to promoting the intake of potassium-rich foods, as this may have a greater public health impact than focusing only on dietary sodium reduction.
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Schutte AE, Conti E, Mels CM, Smith W, Kruger R, Botha S, Gnessi L, Volpe M, Huisman HW. Attenuated IGF-1 predicts all-cause and cardiovascular mortality in a Black population: A five-year prospective study. Eur J Prev Cardiol 2016; 23:1690-1699. [PMID: 27450159 DOI: 10.1177/2047487316661436] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 07/07/2016] [Indexed: 11/15/2022]
Abstract
BACKGROUND Inconsistent findings are reported on whether insulin-like growth factor-1 (IGF-1) is protective or harmful in predicting hypertension, carotid wall thickness and mortality. We determined the five-year prognostic value of IGF-1 for these outcomes in a large Black population prone to hypertension and cardiovascular disease. DESIGN A longitudinal study as part of the PURE (Prospective Urban and Rural Epidemiology) study, North West Province, South Africa. METHODS We measured IGF-1 and IGF binding protein-3 (IGFBP-3) in 1038 HIV-uninfected participants (age range 32-94 years) and assessed blood pressure, carotid intima-media thickness and mortality. RESULTS Over five years 116 deaths occurred. Baseline IGF-1 was similar in survivors and non-survivors (p = 0.50), but tended to be higher in survivors upon adjustment for IGFBP-3 and covariates (p = 0.061). Normotensives and hypertensives (p = 0.072), and those with carotid intima-media thickness < 0.9 mm and ≥ 0.9 mm also displayed similar baseline IGF-1 (p = 0.55). Multivariable-adjusted Cox-regression indicated high IGF-1 predicting lower risk for all-cause mortality (hazard ratio 0.45; 0.23-0.88) and cardiovascular mortality (hazard ratio 0.26; 0.08-0.83) when also adjusting for IGFBP-3. When including normo- and hypertensives at baseline, high IGF-1 was related to normotension at follow-up (hazard ratio 0.68; 0.49-0.95). We found no association with carotid intima-media thickness (hazard ratio 0.59; 0.31-1.14). CONCLUSION In a Black South African population with low socio-economic status and harmful health behaviours, we found a protective independent association between IGF-1 and hypertension, cardiovascular and all-cause mortality, with no association with carotid wall thickness.
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Affiliation(s)
- Aletta E Schutte
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa Medical Research Council, Unit for Hypertension and Cardiovascular Disease, North-West University, Potchefstroom, South Africa
| | - Elena Conti
- Department of Clinical and Molecular Medicine, University of Rome, Sapienza, Italy
| | - Catharina Mc Mels
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa
| | - Wayne Smith
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa
| | - Ruan Kruger
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa
| | - Shani Botha
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa
| | - Lucio Gnessi
- Department of Experimental Medicine, Pathophysiology and Endocrinology Unit, University of Rome, Sapienza, Italy
| | - Massimo Volpe
- Department of Clinical and Molecular Medicine, University of Rome, Sapienza, Italy IRCCS Neuromed, Pozzilli, Italy
| | - Hugo W Huisman
- Hypertension in Africa Research Team (HART), North-West University, Potchefstroom, South Africa Medical Research Council, Unit for Hypertension and Cardiovascular Disease, North-West University, Potchefstroom, South Africa
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Oguoma VM, Nwose EU, Ulasi II, Akintunde AA, Chukwukelu EE, Araoye MA, Edo AE, Ijoma CK, Onyia IC, Ogbu II, Onyeanusi JC, Digban KA, Onodugo OD, Adediran O, Opadijo OG, Bwititi PT, Richards RS, Skinner TC. Maximum accuracy obesity indices for screening metabolic syndrome in Nigeria: A consolidated analysis of four cross-sectional studies. Diabetes Metab Syndr 2016; 10:121-127. [PMID: 26907969 DOI: 10.1016/j.dsx.2016.01.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 01/04/2016] [Indexed: 11/24/2022]
Abstract
BACKGROUND In sub-Saharan Africa, there is no precise use of metabolic syndrome (MetS) definitions and risk factors screening indices in many clinical and public health services. Methods proposed and used in Western populations are adopted without validation within the local settings. The aim of the study is to assess obesity indices and cut-off values that maximise screening of MetS and risk factors in the Nigerian population. METHOD A consolidated analysis of 2809 samples from four population-based cross-sectional study of apparently healthy persons≥18 years was carried out. Optimal waist circumference (WC) and waist-to-height ratio (WHtR) cut points for diagnosing MetS and risk factors were determined using Optimal Data Analysis (ODA) model. The stability of the predictions of the models was also assessed. RESULTS Overall mean values of BMI, WC and WHtR were 24.8±6.0kgm(-2), 84.0±11.3cm and 0.52±0.1 respectively. Optimal WC cut-off for discriminating MetS and diabetes was 83cm in females and 85cm in males, and 82cm in females and 89cm in males, respectively. WC was stable in discriminating diabetes than did WHtR and BMI, while WHtR showed better stability in predicting MetS than WC and BMI. CONCLUSION The study shows that the optimal WC that maximises classification accuracy of MetS differs from that currently used for sub-Saharan ethnicity. The proposed global WHtR of 0.50 may misclassify MetS, diabetes and hypertension. Finally, the WC is a better predictor of diabetes, while WHtR is a better predictor of MetS in this sample population.
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Affiliation(s)
- Victor M Oguoma
- School of Psychological and Clinical Sciences, Charles Darwin University, Northern Territory, Australia.
| | - Ezekiel U Nwose
- School of Community Health, Charles Sturt University, New South Wales, Australia; Department of Public and Community Health, Novena University Ogume, Delta State, Nigeria
| | - Ifeoma I Ulasi
- College of Medicine, University of Nigeria and University of Nigeria Teaching Hospital, Nigeria
| | - Adeseye A Akintunde
- Department of Internal Medicine, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria
| | - Ekene E Chukwukelu
- Department of Chemical Pathology, College of Medicine, University of Nigeria Teaching Hospital, Ituku Ozalla, Nigeria
| | - Matthew A Araoye
- Department of Internal Medicine, Benue State University, Makurdi, Benue State, Nigeria
| | - Andrew E Edo
- Department of Medicine, Federal Medical Centre, Ido-Ekiti, Ekiti State, Nigeria
| | - Chinwuba K Ijoma
- College of Medicine, University of Nigeria and University of Nigeria Teaching Hospital, Nigeria
| | | | - Innocent I Ogbu
- Department of Medical Laboratory Sciences, Nnamdi Azikiwe University, Awka, Nigeria
| | - Joel C Onyeanusi
- Department of Medical laboratory sciences, Faculty of Health Sciences and Technology, University of Nigeria, Enugu, Nigeria
| | - Kester A Digban
- Department of Public and Community Health, Novena University Ogume, Delta State, Nigeria
| | - Obinna D Onodugo
- College of Medicine, University of Nigeria and University of Nigeria Teaching Hospital, Nigeria
| | - Olufemi Adediran
- Department of Internal Medicine, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria
| | - Oladimeji G Opadijo
- Department of Internal Medicine, Ladoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria
| | - Phillip T Bwititi
- School of Community Health, Charles Sturt University, New South Wales, Australia
| | - Ross S Richards
- School of Community Health, Charles Sturt University, New South Wales, Australia
| | - Timothy C Skinner
- School of Psychological and Clinical Sciences, Charles Darwin University, Northern Territory, Australia
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Xu L, Lai D, Fang Y. Spatial analysis of gender variation in the prevalence of hypertension among the middle-aged and elderly population in Zhejiang Province, China. BMC Public Health 2016; 16:447. [PMID: 27230660 PMCID: PMC4882773 DOI: 10.1186/s12889-016-3121-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 05/17/2016] [Indexed: 11/15/2022] Open
Abstract
Background Previous studies have shown that there may be gender disparities in the prevalence of hypertension; however, these studies do not address the spatial information contained in the sample which may limit the analytical results. Our study extends the existing Shared Component Model (SCM) and compares its utility with a logistic regression model to evaluate the significance of spatial information for identifying risk factors for hypertension and other non-rare diseases. Methods A total of 1267 residents aged 45 years of age and over were included in our study, of which 48.1 % were males. The overall prevalence of hypertension was 33.2 %, with females experiencing a higher prevalence than males (35.5 % vs. 30.6 %). The research variables included body mass index (BMI), Waist -to-Height Ratio (WHtR), smoking status, alcohol consumption etc. The extended SCM is employed to investigate regional gender variations in the risk of hypertension and assess the gender variation in the middle-aged and elderly populations of Zhejiang Province in eastern China and then its performance is compared with that of a traditional multiple logistic regression model. Results Our SCM analysis determined that the spatial pattern of hypertension risk for the middle-aged and elderly populations of Zhejiang Province in eastern China is quite different for males and females. Furthermore, Waist -to-Height Ratio (WHtR) continues to be a simple and effective predictor of hypertension risk for males at the regional level. Conclusions We believe that the extended SCM spatial model is a useful tool for identifying risk factors at the regional level. Electronic supplementary material The online version of this article (doi:10.1186/s12889-016-3121-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Li Xu
- Department of Statistics, School of Economics and Trade, Guangdong University of ForeignStudies, Guangzhou, 510006, Peoples Republic of China
| | - Dejian Lai
- Division of Biostatistics, University of Texas Health Science Center at Houston (UTHealth), School of Public Health, Houston, Texas, 77030, USA
| | - Ya Fang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, Key Laboratory of Health Technology Assessment of Fujian Province University, School of Public Health, Xiamen University, Xiamen, 361102, Peoples Republic of China.
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The Role of Body Fat and Fat Distribution in Hypertension Risk in Urban Black South African Women. PLoS One 2016; 11:e0154894. [PMID: 27171011 PMCID: PMC4865112 DOI: 10.1371/journal.pone.0154894] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 04/20/2016] [Indexed: 12/13/2022] Open
Abstract
Developing countries are disproportionately affected by hypertension, with Black women being at greater risk, possibly due to differences in body fat distribution. The objectives of this study were: (1) To examine how different measures of body composition are associated with blood pressure (BP) and incident hypertension; (2) to determine the association between baseline or change in body composition, and hypertension; and (3) to determine which body composition measure best predicts hypertension in Black South African women. The sample comprised 478 non-hypertensive women, aged 29–53 years. Body fat and BP were assessed at baseline and 8.3 years later. Body composition was assessed using dual-energy X-ray absorptiometry (DXA) (n = 273) and anthropometry. Hypertension was diagnosed based on a systolic/diastolic BP ≥140/90 mmHg, or medication use at follow-up. All body composition measures increased (p<0.0001) between baseline and follow-up. SBP and DBP increased by ≥20%, resulting in a 57.1% cumulative incidence of hypertension. Both DXA- and anthropometric-derived measures of body composition were significantly associated with BP, explaining 3–5% of the variance. Baseline BP was the most important predictor of hypertension (adjusted OR: 98–123%). Measures of central adiposity were associated with greater odds (50–65%) of hypertension than total adiposity (44–45%). Only change in anthropometric-derived central fat mass predicted hypertension (adjusted OR: 32–40%). This study highlights that body composition is not a major determinant of hypertension in the sample of black African women. DXA measures of body composition do not add to hypertension prediction beyond anthropometry, which is especially relevant for African populations globally, taking into account the severely resource limited setting found in these communities.
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Dantas EMDS, Pinto CJ, Freitas RPDA, Medeiros ACQD. Agreement in cardiovascular risk rating based on anthropometric parameters. EINSTEIN-SAO PAULO 2016; 13:376-80. [PMID: 26466060 PMCID: PMC4943782 DOI: 10.1590/s1679-45082015ao3349] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 06/08/2015] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE To investigate the agreement in evaluation of risk of developing cardiovascular diseases based on anthropometric parameters in young adults. METHODS The study included 406 students, measuring weight, height, and waist and neck circumferences. Waist-to-height ratio and the conicity index. The kappa coefficient was used to assess agreement in risk classification for cardiovascular diseases. The positive and negative specific agreement values were calculated as well. The Pearson chi-square (χ2) test was used to assess associations between categorical variables (p<0.05). RESULTS The majority of the parameters assessed (44%) showed slight (k=0.21 to 0.40) and/or poor agreement (k<0.20), with low values of negative specific agreement. The best agreement was observed between waist circumference and waist-to-height ratio both for the general population (k=0.88) and between sexes (k=0.93 to 0.86). There was a significant association (p<0.001) between the risk of cardiovascular diseases and females when using waist circumference and conicity index, and with males when using neck circumference. This resulted in a wide variation in the prevalence of cardiovascular disease risk (5.5%-36.5%), depending on the parameter and the sex that was assessed. CONCLUSION The results indicate variability in agreement in assessing risk for cardiovascular diseases, based on anthropometric parameters, and which also seems to be influenced by sex. Further studies in the Brazilian population are required to better understand this issue.
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Gonçalves L, Santos Z, Amado M, Alves D, Simões R, Delgado AP, Correia A, Cabral J, Lapão LV, Craveiro I. Urban Planning and Health Inequities: Looking in a Small-Scale in a City of Cape Verde. PLoS One 2015; 10:e0142955. [PMID: 26599004 PMCID: PMC4657964 DOI: 10.1371/journal.pone.0142955] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 10/28/2015] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND The lack of high-quality data to support evidence-based policies continues to be a concern in African cities, which present marked social, economic and cultural disparities that may differently impact the health of the groups living in different urban contexts. This study explores three urban units--formal, transition and informal--of the capital of Cape Verde, in terms of overweight/obesity, cardiometabolic risk, physical activity and other aspects related to the urban environment. METHODS Quantitative and qualitative research methods were used in this intra-urban study. A proportional stratified random sample (n = 1912 adults), based on geographical coordinates of private households, was selected to apply the UPHI-STAT questionnaire. In a second stage (n = 599), local nutritionists collected anthropometric measurements (e.g., height, waist circumference) and body composition by bioelectric impedance (e.g., body weight, body fat, muscle mass). In a third stage, pedometers were used to count study participants' steps on working and non-working days for one week (n = 118). After a preliminary statistical analysis, a qualitative study was developed to complement the quantitative approach. Generalized linear models, among others, were used in the multivariate analysis. RESULTS Insecurity was the main concern among survey respondents in the three units, notwithstanding with significant differences (p < 0.001) among units. About three-quarters (76.6%) of the participants of the informal unit emphasised the need for more security. The formal unit presents an older age structure (61.3% above 40 years old) and the transition unit a younger age structure (only 30.5% above 40 years old). Some health-related variables were analysed in each unit, revealing an excess of chronic conditions reported by inhabitants of informal unit, compared with the formal unit despite the informal unit's younger age profile. The self-reported hypertension varied significantly among urban units (p < 0.001), with 19.3% in the formal unit, 11.4% in the transition unit and 22.5% in the informal unit. Women of the urban units present significant differences (5% level) for body mass index calculated from self-reported measures (p < 0.001), fat mass (p = 0.005), waist circumference (p = 0.046) and waist-to-height ratio (p = 0.017). For women, overall physical activity was 67.4% (95%CI [64.8,70.0]), with differences among urban units (p = 0.025). For men it was of 85.2% (95%CI [82.3,87.6]), without significant differences among urban units (p = 0.266). The percentage of women and men who reported physical activity in leisure time was discrepant, with 95%CI [22.6, 27.4] and [53.2, 60.2], respectively. The results of pedometers also indicated that men walk significantly more than women (p < 0.001), with a difference of approximately 2000 steps/day. CONCLUSIONS The data collection process itself also gave us some clues on the involvement of local communities, exploring the potential of social capital of these settings and the role of the woman in family and society in Cape Verde. The higher participation of women and residents of informal unit (the most disadvantaged groups) suggests these as the priority target groups for health promotion campaigns. The link between health planning, urban planning and security of the city needs to be reinforced to minimize health, social and gender inequalities.
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Affiliation(s)
- Luzia Gonçalves
- Unidade de Saúde Pública Internacional e Bioestatística, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
- Centro de Estatística e Aplicações da Universidade de Lisboa, Lisboa, Portugal
| | - Zélia Santos
- Unidade de Saúde Pública Internacional e Bioestatística, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
- Serviço de Nutrição e Dietética, Centro Hospitalar Lisboa Ocidental EPE – Hospital Egas Moniz, Lisboa, Portugal
| | - Miguel Amado
- GEOTPU - Grupo de Estudos de Ordenamento do Território e Planeamento Urbano, Faculdade de Ciências da Universidade Nova de Lisboa, Costa da Caparica, Portugal
| | - Daniela Alves
- Unidade de Saúde Pública Internacional e Bioestatística, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Rui Simões
- Unidade de Saúde Pública Internacional e Bioestatística, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
| | - António Pedro Delgado
- Unidade de Saúde Pública Internacional e Bioestatística, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
- Direcção Nacional da Saúde, Ministério da Saúde, Praia, Cabo Verde
| | - Artur Correia
- Unidade de Saúde Pública Internacional e Bioestatística, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
- Instituto Nacional de Saúde Pública, Ministério da Saúde, Praia, Cabo Verde
| | - Jorge Cabral
- Unidade de Saúde Pública Internacional e Bioestatística, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Luís Velez Lapão
- Unidade de Saúde Pública Internacional e Bioestatística, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
- Global Health and Tropical Medicine, IHMT-UNL, Lisboa, Portugal
| | - Isabel Craveiro
- Unidade de Saúde Pública Internacional e Bioestatística, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
- Global Health and Tropical Medicine, IHMT-UNL, Lisboa, Portugal
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Body mass index cut-points to identify cardiometabolic risk in black South Africans. Eur J Nutr 2015; 56:193-202. [DOI: 10.1007/s00394-015-1069-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Accepted: 09/30/2015] [Indexed: 01/14/2023]
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Eksteen P, Pieters M, de Lange Z, Kruger HS. The association of clot lysis time with total obesity is partly independent from the association of PAI-1 with central obesity in African adults. Thromb Res 2015; 136:415-21. [PMID: 26070447 DOI: 10.1016/j.thromres.2015.05.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 05/25/2015] [Accepted: 05/26/2015] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Preliminary evidence indicates that the association of fibrinolytic potential, measured as clot lysis time (CLT), with body composition may differ from that of plasminogen activator inhibitor type-1 (PAI-1). We therefore investigated the association between fibrinolytic markers (plasminogen activator inhibitor type-1 activity (PAI-1act) and CLT) and body composition using detailed body composition analyses. MATERIALS AND METHODS Data from 1288 Africans were cross-sectionally analyzed. Body composition analysis included BMI, waist circumference (WC); waist to height ratio (WHtR), skinfolds and body fat percentage measured with air-displacement plethysmography and bioelectrical impedance analysis. RESULTS PAI-1act and CLT were significantly higher in women than in men, despite adjustment for differences in body composition. PAI-1act and CLT showed similar linear positive relationships with body composition (BMI, WC, WHtR, skinfolds) in men. In women CLT also showed a linear relationship with body composition, while PAI-1act levels plateaued at higher BMI and did not differ across skinfold categories. PAI-1act showed stronger correlations with body composition markers in men than it did in women, while no sex differences existed for CLT. PAI-1act associated more strongly with central obesity, while CLT associated with total body fat. CONCLUSIONS Observed differences may be related to differences in adipose tissue type, distribution and sequence of accumulation between sexes. PAI-1act is strongly influenced by accumulation of visceral adipose tissue, whereas CLT is associated with obesity independent of type and sequence of body fat accumulation in this African adult study population.
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Affiliation(s)
- Philna Eksteen
- Centre of Excellence for Nutrition, North-West University, Potchefstroom, North West, South Africa.
| | - Marlien Pieters
- Centre of Excellence for Nutrition, North-West University, Potchefstroom, North West, South Africa.
| | - Zelda de Lange
- Centre of Excellence for Nutrition, North-West University, Potchefstroom, North West, South Africa.
| | - Herculina S Kruger
- Centre of Excellence for Nutrition, North-West University, Potchefstroom, North West, South Africa.
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Association of Adiposity Indices with Platelet Distribution Width and Mean Platelet Volume in Chinese Adults. PLoS One 2015; 10:e0129677. [PMID: 26058081 PMCID: PMC4461260 DOI: 10.1371/journal.pone.0129677] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 05/12/2015] [Indexed: 11/30/2022] Open
Abstract
Hypoxia is a prominent characteristic of inflammatory tissue lesions. It can affect platelet function. While mean platelet volume (MPV) and platelet distribution width (PDW) are sample platelet indices, they may reflect subcinical platelet activation. To investigated associations between adiposity indices and platelet indices, 17327 eligible individuals (7677 males and 9650 females) from the Dongfeng-Tongji Cohort Study (DFTJ-Cohort Study, n=27009) were included in this study, except for 9682 individuals with missing data on demographical, lifestyle, physical indicators and diseases relative to PDW and MPV. Associations between adiposity indices including waist circumstance (WC), waist-to-height ratio (WHtR), body mass index (BMI), and MPV or PDW in the participants were analyzed using multiple logistic regressions. There were significantly negative associations between abnormal PDW and WC or WHtR for both sexes (ptrend<0.001 for all), as well as abnormal MPV and WC or WHtR among female participants (ptrend<0.05 for all). In the highest BMI groups, only females with low MPV or PDW were at greater risk for having low MPV (OR=1.33, 95% CI=1.10, 1.62 ptrend<0.001) or PDW (OR=1.34, 95% CI=1.14, 1.58, ptrend<0.001) than those who had low MPV or PDW in the corresponding lowest BMI group. The change of PDW seems more sensitive than MPV to oxidative stress and hypoxia. Associations between reduced PDW and MPV values and WC, WHtR and BMI values in Chinese female adults may help us to further investigate early changes in human body.
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Peer N, Steyn K, Levitt N. Differential obesity indices identify the metabolic syndrome in Black men and women in Cape Town: the CRIBSA study. J Public Health (Oxf) 2015; 38:175-82. [DOI: 10.1093/pubmed/fdu115] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Hajian-Tilaki K, Heidari B. Is waist circumference a better predictor of diabetes than body mass index or waist-to-height ratio in Iranian adults? Int J Prev Med 2015; 6:5. [PMID: 25789140 PMCID: PMC4362276 DOI: 10.4103/2008-7802.151434] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2014] [Accepted: 01/01/2015] [Indexed: 02/06/2023] Open
Abstract
Background: Several measures of adiposity have been used for predicting diabetes. The results of studies regarding superiority of waist circumference (WC) to body mass index (BMI) are inconsistent. This study designed to compare the ability of different anthropometric measures in predicting diabetes and to determine their optimal cut-off values. Methods: A population-based cross-sectional study was conducted with 1,000 representative sample among adults aged 20–80 years in Babol, the Northern Iran. The demographic data were collected in a household survey, and the anthropometric measures of weight, height, waist, and hip circumference were measured with a standard method. Fasting blood sugar (FBS) ≥126 mg/dl was considered as diabetes. receiver operating characteristic analysis was used to estimate the predictive ability of different anthropometric indexes and their optimal cut-off values for high FBS. Results: The overall prevalence rate of diabetes was 14.0% (14.4% in men vs. 13.5% in women, P = 0.65). The prevalence rate was significantly higher in older age (>60 years), low educated and obese (P = 0.001). The mean of BMI, WC, waist-to-hip ratio (WHR), and waist-to-height ratio (WHtR) were significantly higher among diabetic in both sexes (P = 0.001). Among men, WC (area under the ROC curve [AUC] =0.64) and WHtR (AUC = 0.63) have slightly higher accuracy index compared with BMI (AUC = 0.62) or WHR (AUC = 0.60). In contrast, among women, WHtR (AUC = 0.69) and WC (AUC = 0.68) yielded slightly better predictive than BMI (AUC = 0.67). The optimal cut-off values obtained for BMI and WHtR were similar between two sexes (BMI = 24.95 kg/m2 for men and BMI = 25.2 kg/m2 for women, WHtR = 0.51 for both sexes) whereas the optimal cut-off value for WC was higher in men than women (98.5 cm men vs. 89.5 cm women). Conclusions: Overall WC and WHtR exhibited a slightly better discriminate performance than BMI for diabetes in both sexes, particularly in women.
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Affiliation(s)
| | - Bezad Heidari
- Department of Internal Medicine, Ayatollah Rohani Hospital, Babol University of Medical Sciences, Babol, Iran
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EL Mabchour A, Delisle H, Vilgrain C, Larco P, Sodjinou R, Batal M. Specific cut-off points for waist circumference and waist-to-height ratio as predictors of cardiometabolic risk in Black subjects: a cross-sectional study in Benin and Haiti. Diabetes Metab Syndr Obes 2015; 8:513-23. [PMID: 26604808 PMCID: PMC4629961 DOI: 10.2147/dmso.s88893] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
PURPOSE Waist circumference (WC) and waist-to-height ratio (WHtR) are widely used as indicators of abdominal adiposity and the cut-off values have been validated primarily in Caucasians. In this study we identified the WC and WHtR cut-off points that best predicted cardiometabolic risk (CMR) in groups of African (Benin) and African ancestry (Haiti) Black subjects. METHODS This cross-sectional study included 452 apparently healthy subjects from Cotonou (Benin) and Port-au-Prince (Haiti), 217 women and 235 men from 25 to 60 years. CMR biomarkers were the metabolic syndrome components. Additional CMR biomarkers were a high atherogenicity index (total serum cholesterol/high density lipoprotein cholesterol ≥4 in women and ≥5 in men); insulin resistance set at the 75th percentile of the calculated Homeostasis Model Assessment index (HOMA-IR); and inflammation defined as high-sensitivity C-reactive protein (hsCRP) concentrations between 3 and 10 mg/L. WC and WHtR were tested as predictors of two out of the three most prevalent CMR biomarkers. Receiver operating characteristic (ROC) curves, Youden's index, and likelihood ratios were used to assess the performance of specific WC and WHtR cut-offs. RESULTS High atherogenicity index (59.5%), high blood pressure (23.2%), and insulin resistance (25% by definition) were the most prevalent CMR biomarkers in the study groups. WC and WHtR were equally valid as predictors of CMR. Optimal WC cut-offs were 80 cm and 94 cm in men and women, respectively, which is exactly the reverse of the generic cut-offs. The standard 0.50 cut-off of WHtR appeared valid for men, but it had to be increased to 0.59 in women. CONCLUSION CMR was widespread in these population groups. The present study suggests that in order to identify Africans with high CMR, WC thresholds will have to be increased in women and lowered in men. Data on larger samples are needed.
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Affiliation(s)
- Asma EL Mabchour
- Transition Nutritionnelle (TRANSNUT), WHO Collaborating Centre on Nutrition Changes and Development, Department of Nutrition, Faculty of Medicine, University of Montreal, Montreal, QC, Canada
| | - Hélène Delisle
- Transition Nutritionnelle (TRANSNUT), WHO Collaborating Centre on Nutrition Changes and Development, Department of Nutrition, Faculty of Medicine, University of Montreal, Montreal, QC, Canada
- Correspondence: Hélène Delisle, Transition Nutritionnelle (TRANSNUT), WHO Collaborating Centre on Nutrition Changes and Development, Department of Nutrition, Faculty of Medicine, University of Montreal, Pavillon Liliane-Stewart, CP 6128 Succursale Centre-ville, Montreal, QC H3C 3J7, Canada, Tel +1 514 343 6111 ext 25219, Email
| | - Colette Vilgrain
- Haitian Foundation for Diabetes and Cardiovascular Diseases (FHADIMAC), Port-au-Prince, Haiti
| | - Philippe Larco
- Haitian Foundation for Diabetes and Cardiovascular Diseases (FHADIMAC), Port-au-Prince, Haiti
| | - Roger Sodjinou
- West Africa Health Organization (WAHO), Bobo-Dioulasso, Burkina Faso
| | - Malek Batal
- Transition Nutritionnelle (TRANSNUT), WHO Collaborating Centre on Nutrition Changes and Development, Department of Nutrition, Faculty of Medicine, University of Montreal, Montreal, QC, Canada
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