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Teni FS, Gerdtham UG, Leidl R, Henriksson M, Åström M, Sun S, Burström K. Inequality and heterogeneity in health-related quality of life: findings based on a large sample of cross-sectional EQ-5D-5L data from the Swedish general population. Qual Life Res 2022; 31:697-712. [PMID: 34628587 PMCID: PMC8921093 DOI: 10.1007/s11136-021-02982-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/22/2021] [Indexed: 11/24/2022]
Abstract
PURPOSE This study aimed to investigate inequality and heterogeneity in health-related quality of life (HRQoL) and to provide EQ-5D-5L population reference data for Sweden. METHODS Based on a large Swedish population-based survey, 25,867 respondents aged 30‒104 years, HRQoL is described by sex, age, education, income, economic activity, health-related behaviours, self-reported diseases and conditions. Results are presented by EQ-5D-5L dimensions, respondents rating of their overall health on the EQ visual analogue scale (EQ VAS), VAS index value and TTO (time trade-off) index value allowing for calculation of quality-adjusted life years (QALYs). Ordinary Least Squares and multivariable logistic regression analyses were used to study inequalities in observed EQ VAS score between socioeconomic groups and the likelihood to report problems on the dimensions, respectively, adjusted for confounders. RESULTS In total, 896 different health states were reported; 24.1% did not report any problems. Most problems were reported with pain/discomfort. Women reported worse HRQoL than men, and health deteriorated with age. The strongest association between diseases and conditions and EQ VAS score was seen for depression and mental health problems. There was a socioeconomic gradient in HRQoL; adjusting for health-related behaviours, diseases and conditions slightly reduced the differences between educational groups and income groups, but socioeconomic inequalities largely remained. CONCLUSION EQ-5D-5L population reference (norms) data are now available for Sweden, including socioeconomic differentials. Results may be used for comparisons with disease-specific populations and in health economic evaluations. The observed socioeconomic inequality in HRQoL should be of great importance for policy makers concerned with equity aspects.
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Affiliation(s)
- Fitsum Sebsibe Teni
- Health Outcomes and Economic Evaluation Research Group, Stockholm Centre for Healthcare Ethics, Department of Learning, Informatics, Management and Ethics, Karolinska Institutet, Tomtebodavägen 18a, 171 77, Stockholm, Sweden
| | - Ulf-G Gerdtham
- Department of Economics, Lund University, Lund, Sweden
- Health Economics Unit, Department of Clinical Sciences in Malmö, Lund University, Lund, Sweden
| | - Reiner Leidl
- Institute for Health Economics and Health Care Management, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
- Munich Center of Health Sciences, Ludwig-Maximilians University, Munich, Germany
| | - Martin Henriksson
- Center for Medical Technology Assessment, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
| | - Mimmi Åström
- Health Outcomes and Economic Evaluation Research Group, Stockholm Centre for Healthcare Ethics, Department of Learning, Informatics, Management and Ethics, Karolinska Institutet, Tomtebodavägen 18a, 171 77, Stockholm, Sweden
- Equity and Health Policy Research Group, Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden
| | - Sun Sun
- Health Outcomes and Economic Evaluation Research Group, Stockholm Centre for Healthcare Ethics, Department of Learning, Informatics, Management and Ethics, Karolinska Institutet, Tomtebodavägen 18a, 171 77, Stockholm, Sweden
- Department of Epidemiology and Global Health, Umeå University, Umeå, Sweden
| | - Kristina Burström
- Health Outcomes and Economic Evaluation Research Group, Stockholm Centre for Healthcare Ethics, Department of Learning, Informatics, Management and Ethics, Karolinska Institutet, Tomtebodavägen 18a, 171 77, Stockholm, Sweden.
- Equity and Health Policy Research Group, Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden.
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Langley PC. Medicaid Formulary Decisions and the Institute for Clinical and Economic Review: Abandoning Pseudoscience in Imaginary Pharmaceutical Pricing Claims. Innov Pharm 2021; 12:10.24926/iip.v12i1.3702. [PMID: 34007677 PMCID: PMC8102970 DOI: 10.24926/iip.v12i1.3702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Medicaid formulary committees and other gatekeepers face a difficult task. On the one hand they can utilize technical expertise in evaluating the real world evidence for clinical, quality of life and resource utilization claims for competing products while on the other hand they may be asked to assess claims built by simulation models for pricing and product access. A common option has been to take modeled claims from third parties such as the Institute for Clinical and Economic Review (ICER) at face value without challenging the model structure, its assumptions and its incremental cost-per-QALY claims set against competing products or the existing standard of care. Unfortunately, from the available evidence, it seems clear that many formulary assessment groups, last but not least those for whom the ICER modeling claims are targeted, have little if any appreciation of the limitations of ICER modeling. There are two substantive issues: (i) a failure to appreciate the limitations imposed by the standards of normal science for credible, empirically evaluable and replicable product claims and (ii) an understanding of limitations imposed by the axioms of fundamental measurement. In the latter case, a failure to recognize that the quality adjusted life year (QALY) is an impossible mathematical construct (hence the I-QALY). To these limitations should be added the potential for constructing competing imaginary claims. Surprisingly, ICER has provided the ideal opportunity to construct competing claims with the launch in late 2020 of the ICER Analytics cloud platform. Formulary committees and other health decision makers should be aware that claims based on the ICER Analytics platform together with competing lifetime modelled claims all fail the standards of normal science. Factoring these into formulary decisions is not only misguided but may have unintended consequences for pricing and access that may disadvantage significantly patients and caregivers. We have spent too much time debating the merits or otherwise of the I-QALY for targeted patient groups with the parties failing to recognize that the focus on simulated cost-per-I-QALY value assessments is a mathematical folly; I-QALY claims are a chimera. The I-QALY, at long last, should be abandoned together with modelled lifetime simulations. Medicaid formulary decision makes should rethink the required evidence base for formulary decisions and negotiations. Care should be taken to revisit previous negotiations where ICER recommendations have been utilized to support pricing and access.
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Muennig PA, Mohit B, Wu J, Jia H, Rosen Z. Cost Effectiveness of the Earned Income Tax Credit as a Health Policy Investment. Am J Prev Med 2016; 51:874-881. [PMID: 27614902 DOI: 10.1016/j.amepre.2016.07.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Revised: 05/24/2016] [Accepted: 07/05/2016] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Lower-income Americans are suffering from declines in income, health, and longevity over time. Income and employment policies have been proposed as a potential non-medical solution to this problem. METHODS An interrupted time series analysis of state-level incremental supplements to the Earned Income Tax Credit (EITC) program was performed using data from 1993 to 2010 Behavioral Risk Factor Surveillance System surveys and state-level life expectancy. The cost effectiveness of state EITC supplements was estimated using a microsimulation model, which was run in 2015. RESULTS Supplemental EITC programs increased health-related quality of life and longevity among the poor. The program costs about $7,786/quality-adjusted life-year gained (95% CI=$4,100, $13,400) for the average recipient. This ratio increases with larger family sizes, costing roughly $14,261 (95% CI=$8,735, $19,716) for a family of three. CONCLUSIONS State supplements to EITC appear to be highly cost effective, but randomized trials are needed to confirm these findings.
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Affiliation(s)
- Peter A Muennig
- Mailman School of Public Health, Columbia University, New York, New York.
| | - Babak Mohit
- Mailman School of Public Health, Columbia University, New York, New York
| | - Jinjing Wu
- Mailman School of Public Health, Columbia University, New York, New York
| | - Haomiao Jia
- School of Nursing. Columbia University, New York, New York
| | - Zohn Rosen
- Mailman School of Public Health, Columbia University, New York, New York
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Zhang T, Shi W, Huang Z, Gao D, Guo Z, Chongsuvivatwong V. Gender and ethnic health disparities among the elderly in rural Guangxi, China: estimating quality-adjusted life expectancy. Glob Health Action 2016; 9:32261. [PMID: 27814777 PMCID: PMC5097153 DOI: 10.3402/gha.v9.32261] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 09/29/2016] [Accepted: 09/30/2016] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Ethnic health inequalities for males and females among the elderly have not yet been verified in multicultural societies in developing countries. The aim of this study was to assess the extent of disparities in health expectancy among the elderly from different ethnic groups using quality-adjusted life expectancy. DESIGN A cross-sectional community-based survey was conducted. A total of 6,511 rural elderly individuals aged ≥60 years were selected from eight different ethnic groups in the Guangxi Zhuang Autonomous Region of China and assessed for health-related quality of life (HRQoL). The HRQoL utility value was combined with life expectancy at age 60 years (LE60) data by using Sullivan's method to estimate quality-adjusted life expectancy at age 60 years (QALE60) and loss in quality-adjusted life years (QALYs) for each group. RESULTS Overall, LE60 and QALE60 for all ethnic groups were 20.9 and 18.0 years in men, respectively, and 24.2 and 20.3 years in women. The maximum gap in QALE60 between ethnic groups was 3.3 years in males and 4.6 years in females. The average loss in QALY was 2.9 years for men and 3.8 years for women. The correlation coefficient between LE60 and QALY lost was -0.53 in males and 0.12 in females. CONCLUSION Women live longer than men, but they suffer more; men have a shorter life expectancy, but those who live longer are healthier. Attempts should be made to reduce suffering in the female elderly and improve longevity for men. Certain ethnic groups had low levels of QALE, needing special attention to improve their lifestyle and access to health care.
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Affiliation(s)
- Tai Zhang
- Epidemiology and Biostatistics Unit, Faculty of Public Health, Dali University, Dali, China
- Epidemiology Unit, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand
| | - Wuxiang Shi
- Health Management Unit, Faculty of Humanities and Management, Guilin Medical University, Guilin, China
| | - Zhaoquan Huang
- Health Management Unit, Faculty of Humanities and Management, Guilin Medical University, Guilin, China
| | - Dong Gao
- Health Management Unit, Faculty of Humanities and Management, Guilin Medical University, Guilin, China
| | - Zhenyou Guo
- Health Management Unit, Faculty of Humanities and Management, Guilin Medical University, Guilin, China
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Quah JHM, Wang P, Ng RRG, Luo N, Tan NC. Health-related quality of life of older Asian patients with multimorbidity in primary care in a developed nation. Geriatr Gerontol Int 2016; 17:1429-1437. [PMID: 27576513 DOI: 10.1111/ggi.12881] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 06/23/2016] [Accepted: 06/30/2016] [Indexed: 12/21/2022]
Abstract
AIM Older adults are susceptible to two or more chronic ailments or multimorbidity. The present study aimed to establish the relationship between multimorbidity and health-related quality of life (HRQoL) amongst Asian elderly patients in primary care in a developed nation. It also assessed how functional disability and chronic musculoskeletal pain are associated with HRQoL. METHODS A cross-sectional study was carried out in a Singapore public primary care clinic. An interviewer-administered questionnaire was used to collect data on chronic disease profile, HRQoL (using the European Quality of Life 5 Dimension), basic activities of daily living, instrumental activities of daily living, musculoskeletal pain and sociodemographic characteristics. The association of multimorbidity, functional disability and chronic musculoskeletal pain with HRQoL was assessed using multivariate linear regression analysis. RESULTS A total of 498 outpatients aged 65 years and older with multimorbidity were enrolled. Their mean age was 73.9 years, and approximately 75% had between two and four chronic conditions. The most commonly reported chronic conditions were hypertension (86.1%), hyperlipidemia (80.7%), diabetes (40.2%) and arthritis (33.3%). The European Quality of Life 5 Dimension index score decreased significantly when the number of comorbidities was more than five. Chronic hip and knee pain, one or more "dependent" activities of daily living dimensions and two or more "dependent" IADL dimensions were independently associated with worse HRQoL. CONCLUSIONS Multimorbidity is associated with poorer HRQoL amongst older adults in Singapore. Review of chronic musculoskeletal pain and functional disabilities should be integrated into the comprehensive assessment of older adults in an enhanced model of primary care to improve the HRQoL of these older patients. Geriatr Gerontol Int 2017; 17: 1429-1437.
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Affiliation(s)
| | - Pei Wang
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore
| | | | - Nan Luo
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore
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Brown DS, Jia H, Zack MM, Thompson WW, Haddix AC, Kaplan RM. Using health-related quality of life and quality-adjusted life expectancy for effective public health surveillance and prevention. Expert Rev Pharmacoecon Outcomes Res 2013; 13:425-7. [PMID: 23977969 PMCID: PMC5553113 DOI: 10.1586/14737167.2013.818816] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Derek S. Brown
- Brown School; Faculty Scholar, Institute for Public Health; Washington University in St. Louis; Campus Box 1196; One Brookings Drive; St. Louis, MO 63130; USA; phone +1.314.935.8651; fax +1.314.935.8511;
| | - Haomiao Jia
- Department of Biostatistics, Mailman School of Public Health and School of Nursing; Columbia University; New York, NY; phone: +1.212.305.6929;
| | - Matthew M. Zack
- Division of Population Health; National Center for Chronic Disease Prevention and Health Promotion; US Centers for Disease Control & Prevention; Atlanta, GA; phone: +1.770.488.5460; fax +1.770.488.5486;
| | - William W. Thompson
- Division of Population Health; National Center for Chronic Disease Prevention and Health Promotion; US Centers for Disease Control & Prevention; Atlanta, GA; phone: +1.770.488.5514; fax +1.770.488.5486;
| | - Anne C. Haddix
- National Center for Chronic Disease Prevention and Health Promotion; US Centers for Disease Control & Prevention; Atlanta, GA; phone: +1.770.488.6469; fax: +1.770.488.5973;
| | - Robert M. Kaplan
- National Institutes of Health; Bethesda, MD; phone: +1.301.402.1146;
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Huisingh-Scheetz MJ, Bilir SP, Rush P, Burnet D, Dale W. The independent effect of body mass index on health-related quality of life among racial and ethnic subgroups. Qual Life Res 2012; 22:1565-75. [PMID: 23124532 DOI: 10.1007/s11136-012-0305-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/24/2012] [Indexed: 10/27/2022]
Abstract
PURPOSE To evaluate the impact of race/ethnicity on the relationship between body mass index (BMI) and health-related quality of life (HRQOL) among blacks, Hispanics, and whites. METHODS We used the Sinai Urban Health Institute's Improving Community Health Survey dataset to measure physical and mental HRQOL using the Physical Component Score (PCS-12) and the Mental Component Score (MCS-12) of the Short Form-12. Multivariate linear regression models were applied to the overall sample and in models stratified by race/ethnicity to evaluate the effects of BMI on physical and mental HRQOL outcome variables while controlling for confounders. RESULTS Considering physical HRQOL, increasing BMI was independently associated with worse PCS-12 (β = -0.22, p value <0.001) in the overall sample; the magnitude was not significantly different across racial/ethnic subgroups (blacks: β = -0.18, p value = 0.02; Hispanics: β = -0.28, p value = 0.01; whites: β = -0.20, p value = 0.02). Overall, Hispanic participants reported a worse PCS-12 compared to whites (β = -3.06, p value = 0.002). Considering mental HRQOL, BMI was not significantly associated with MCS-12 in the overall sample (β = -0.06, p value = 0.21) nor was BMI significantly associated with MCS-12 in any racial/ethnic subgroups. Overall, black participants reported better MCS-12 compared to whites (β = 2.51, p value = 0.001). CONCLUSIONS BMI was associated with worse physical HRQOL to a similar degree among blacks, Hispanics, and whites. This finding suggests that interventions leading to obesity reduction should be associated with substantial and equal improvements in the physical HRQOL of all race/ethnicity groups.
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Affiliation(s)
- M J Huisingh-Scheetz
- Section of Geriatrics and Palliative Medicine, University of Chicago, 5841 South Maryland Ave. MC 6098, W707, Chicago, IL 60637, USA.
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Pueyo MJ, Surís X, Larrosa M, Auleda J, Mompart A, Brugulat P, Tresserras R, de la Puente ML. [Importance of chronic musculoskeletal problems in the population of Catalonia (Spain): prevalence and effect on self-perceived health, activity restriction and use of health services]. GACETA SANITARIA 2011; 26:30-6. [PMID: 21733600 DOI: 10.1016/j.gaceta.2011.03.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2010] [Revised: 03/10/2011] [Accepted: 03/10/2011] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To determine the importance of chronic musculoskeletal problems in the adult population of Catalonia (Spain) and their effect on self-perceived health, activity restriction and use of health services. METHODS A population-based survey of 15,926 adults was performed. Multistage stratified sampling was performed. The variables gathered were sociodemographic characteristics, self-reported chronic health problems, self-perceived health, activity restriction and use of health services. Musculoskeletal problems were grouped into four categories: osteoarthritis-arthritis or rheumatism (OA), chronic dorsal or lumbar pain (LBP), chronic cervical pain (UBP), and osteoporosis. RESULTS Chronic health problems were reported by 77.4% of the adult population. The most frequent health problem was LBP, followed by UBP and OA. After adjustment by age was performed, female sex increased the risk of reporting OA, LBP, UBP and osteoporosis (OR=2.6, 1.5, 2.3, and 5.3, respectively). The prevalence increased with greater age and with lower socioeconomic status. After adjustment was performed by age, sex, social class and obesity, self-perceived health was worse in people with these problems (42.7% vs 11%). The four categories were the main causes of activity restriction in the last year (OR 2.70) and the last 15 days (OR=2.32) and were associated with a higher use of health services. CONCLUSIONS Los problemas reumáticos son los principales problemas de salud crónicos declarados por la población adulta. La prevalencia es mayor es las mujeres, aumenta con la edad y en las clases desfavorecidas. Hay una asociación significativa entre declarar problemas musculoesqueléticos y salud autopercibida mala o regular, y mayor restricción de actividades y uso de servicios sanitarios.
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Affiliation(s)
- María Jesús Pueyo
- Plan Director de Enfermedades Reumáticas y del Aparato Locomotor y Plan de Salud, Dirección General de Planificación y Evaluación, Departamento de Salud, Generalitat de Cataluña, Barcelona, España.
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Wu XY, Ohinmaa A, Veugelers PJ. Sociodemographic and neighbourhood determinants of health-related quality of life among grade-five students in Canada. Qual Life Res 2010; 19:969-76. [DOI: 10.1007/s11136-010-9663-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/14/2010] [Indexed: 11/28/2022]
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Feeny D, Kaplan MS, Huguet N, McFarland BH. Comparing population health in the United States and Canada. Popul Health Metr 2010; 8:8. [PMID: 20429875 PMCID: PMC2873793 DOI: 10.1186/1478-7954-8-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2009] [Accepted: 04/29/2010] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The objective of the paper is to compare population health in the United States (US) and Canada. Although the two countries are very similar in many ways, there are potentially important differences in the levels of social and economic inequality and the organization and financing of and access to health care in the two countries. METHODS Data are from the Joint Canada/United States Survey of Health 2002/03. The Health Utilities Index Mark 3 (HUI3) was used to measure overall health-related quality of life (HRQL). Mean HUI3 scores were compared, adjusting for major determinants of health, including body mass index, smoking, education, gender, race, and income. In addition, estimates of life expectancy were compared. Finally, mean HUI3 scores by age and gender and Canadian and US life tables were used to estimate health-adjusted life expectancy (HALE). RESULTS Life expectancy in Canada is higher than in the US. For those < 40 years, there were no differences in HRQL between the US and Canada. For the 40+ group, HRQL appears to be higher in Canada. The results comparing the white-only population in both countries were very similar. For a 19-year-old, HALE was 52.0 years in Canada and 49.3 in the US. CONCLUSIONS The population of Canada appears to be substantially healthier than the US population with respect to life expectancy, HRQL, and HALE. Factors that account for the difference may include access to health care over the full life span (universal health insurance) and lower levels of social and economic inequality, especially among the elderly.
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Affiliation(s)
- David Feeny
- The Center for Health Research, Kaiser Permanente Northwest, 3800 N Interstate Avenue, Portland, OR, 97227, USA
- University of Alberta and Institute of Health Economics, 10405 Jasper Avenue, #1200, Edmonton, AB, T5J 3N4, Canada
- Health Utilities Incorporated, 88 Sydenham Street, Dundas, ON, L9H 2V3, Canada
| | - Mark S Kaplan
- Department of Community Health, Portland State University, 506 SW Mill Street, Portland, OR, 97201, USA
| | - Nathalie Huguet
- Research Associate, Center for Public Health Studies, Portland State University, 506 SW Mill Street, Portland, OR, 97201, USA
| | - Bentson H McFarland
- Departments of Psychiatry and Public Health and Preventive Medicine, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR, 97239, USA
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Roux-en-Y gastric bypass reverses renal glomerular but not tubular abnormalities in excessively obese diabetics. Surgery 2009; 147:282-7. [PMID: 20004430 DOI: 10.1016/j.surg.2009.09.017] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2008] [Accepted: 09/18/2009] [Indexed: 01/22/2023]
Abstract
BACKGROUND Obesity and type 2 diabetes are associated with renal dysfunction, which improves after Roux-en-Y gastric bypass (RYGB). During a 12-month follow-up period, we studied prospectively the changes in glomerular and tubular functions that occurred in excessively obese diabetic and non diabetic subjects after RYGB. METHODS The cohort included 35 patients, 54% of whom had type 2 diabetes. Glomerular filtration rate (GFR) was estimated using creatinine clearance. Tubular function was studied by measuring the ratio of urinary cystatin C to urinary creatinine (UCC ratio). RESULTS Baseline renal parameters, anthropometric characteristics, and changes in body mass index after the surgical procedures were similar between the 2 cohorts. At 12 months after RYGB, creatinine clearance decreased 15% in diabetics (P = .02) and 21% in nondiabetics (P = .03). A change in GFR was seen earlier in the nondiabetics (-29% after 6 months; P = .003). The UCC ratio was increased at both 6- and 12-month follow-ups (P = .03 and .003, respectively) only in the diabetic group. CONCLUSION GFR was improved at 12 months after RYGB, with nondiabetics showing a greater propensity score. Tubular function remained unchanged in the nondiabetic subjects, but worsening occurred in the diabetic subjects. These results underscore the importance of reversal of excessive obesity before the onset of frank diabetes.
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