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Wong S, Thanigaimani S, Charles J, Whaleboat D, Golledge J. Outcomes of Revascularisation for Treating Lifestyle-Limiting Intermittent Claudication in Aboriginal and Torres Strait Islander People and Non-Indigenous Patients from North Queensland: A Retrospective Cohort Study. J Clin Med 2024; 13:3339. [PMID: 38893050 PMCID: PMC11172727 DOI: 10.3390/jcm13113339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Revised: 06/03/2024] [Accepted: 06/04/2024] [Indexed: 06/21/2024] Open
Abstract
Background: This retrospective analysis of an ongoing prospective cohort study aimed to assess the outcome of revascularisation for treating lifestyle-limiting intermittent claudication caused by peripheral artery disease (PAD) in Aboriginal and Torres Strait Islander Peoples and non-Indigenous North Queenslanders. Methods: Consenting patients with PAD who underwent endovascular or open revascularisation procedures for treating lifestyle-limiting intermittent claudication were included. The primary outcome measure was major adverse limb events (MALEs), defined as major amputation or the requirement for repeat open or endovascular revascularisation. Results: Of the 378 included patients, 18 (4.8%) identified as Aboriginal and/or Torres Strait Islander Peoples. During a mean follow-up (standard deviation) of 6.0 (3.9) years, the incidence of MALE was similar in the Aboriginal and Torres Strait Islander People and non-Indigenous Australians (absolute percentage: 50.0% vs. 40.6%, log rank p = 0.59). In both unadjusted and adjusted analyses, Aboriginal and Torres Strait Islander Peoples and non-Indigenous Australians had similar risks of MALE (unadjusted hazard ratio, HR, 1.20, 95% confidence interval, CI, 0.61, 2.36; adjusted HR 1.02, 95%CI 0.50, 2.06). Conclusions: This study suggests that Aboriginal and Torres Strait Islander People are under-represented in the population of patients undergoing revascularisation to treat intermittent claudication. Due to small numbers it cannot be reliably concluded that Aboriginal and Torres Strait Islander People and non-Indigenous Australians have similar rates of MALE.
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Affiliation(s)
- Shannon Wong
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD 4811, Australia; (S.W.); (S.T.)
| | - Shivshankar Thanigaimani
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD 4811, Australia; (S.W.); (S.T.)
| | - James Charles
- First Peoples Health Unit, Griffith University, Brisbane, QLD 4222, Australia;
| | - Donald Whaleboat
- Anton Breinl Research Centre for Health Systems Strengthening, Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, QLD 4811, Australia;
| | - Jonathan Golledge
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD 4811, Australia; (S.W.); (S.T.)
- The Department of Vascular and Endovascular Surgery, Townsville University Hospital, Townsville, QLD 4814, Australia
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Davis TME, Davis W. The relationship between glycated haemoglobin and blood glucose-lowering treatment trajectories in type 2 diabetes: The Fremantle Diabetes Study Phase II. Diabetes Obes Metab 2024; 26:283-292. [PMID: 37795655 DOI: 10.1111/dom.15314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/14/2023] [Accepted: 09/22/2023] [Indexed: 10/06/2023]
Abstract
AIMS To examine the relationships between glycaemia and treatment complexity over 6 years in well-characterized community-based people with type 2 diabetes. MATERIALS AND METHODS Fremantle Diabetes Study Phase II participants who had type 2 diabetes with glycated haemoglobin (HbA1c) and blood glucose-lowering therapy (BGLT) data over 6 years were included. Group-based multi-trajectory modelling identified combined HbA1c/BGLT trajectory subgroups for diabetes durations of ≤1.0 year (Group 1; n = 160), >1.0 to 10.0 years (Group 2; n = 382;) and >10.0 years (Group 3; n = 357). Multinomial regression was used to identify baseline associates of subgroup membership. RESULTS The optimum numbers of trajectory subgroups were three in Group 1 (low, medium, high) and four in Groups 2 and 3 (low, low/high medium, high). Each low trajectory subgroup maintained a mean HbA1c concentration of <53 mmol/mol (<7.0%) on lifestyle measures, or monotherapy (Group 3). All five medium subgroups had stable HbA1c trajectories at <58 mmol/mol (<7.5%) but required increasing oral BGLT, or insulin (Group 3, high medium). The Group 1 high subgroup showed a falling then increasing HbA1c with steady progression to insulin. The high subgroups in Groups 2 and 3 showed stable HbA1c profiles at means of approximately 64 mmol/mol (8.0%) and 86 mmol/L (10.0%), respectively, on insulin. Non-Anglo Celt ethnicity, central obesity and hypertriglyceridaemia were strongly associated with Group 1 high subgroup membership. Younger age at diagnosis and central obesity were independent associates of the most adverse HbA1c trajectories in Groups 2 and 3. CONCLUSIONS These data demonstrate diabetes duration-dependent heterogeneity in glycaemic and treatment profiles and related clinical and laboratory variables, which have implications for management.
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Affiliation(s)
- Timothy M E Davis
- University of Western Australia, Medical School, Fremantle Hospital, Fremantle, Western Australia, Australia
| | - Wendy Davis
- University of Western Australia, Medical School, Fremantle Hospital, Fremantle, Western Australia, Australia
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Morgan T, Ralston A, Davey A, Holliday EG, Nelson M, Fielding A, van Driel M, Tapley A, Moad D, Ball J, Presser J, Spike N, Magin P. Absolute cardiovascular risk assessment by Australian early-career general practitioners: a cross-sectional study. Fam Med Community Health 2023; 11:e002251. [PMID: 37604595 PMCID: PMC10445344 DOI: 10.1136/fmch-2023-002251] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023] Open
Abstract
OBJECTIVE To determine the prevalence and associations of general practice registrars' performing absolute cardio-vascular risk (ACVR) assessment (ACVRa). DESIGN A cross-sectional study employing data (2017-2018) from the Registrar Clinical Encounters in Training project, an ongoing inception cohort study of Australian GP registrars. The outcome measure was whether an ACVRa was performed. Analyses employed univariable and multivariable regression. Analysis was conducted for all patient problems/diagnoses, then for an 'at-risk' population (specific problems/diagnoses for which ACVRa is indicated). SETTING Three GP regional training organisations (RTOs) across three Australian states. PARTICIPANTS GP registrars training within participating RTOs. RESULTS 1003 registrars (response rate 96.8%) recorded details of 69 105 problems either with Aboriginal and/or Torres Strait patients aged 35 years and older or with non-Indigenous patients aged 45 years and older. Of these problems/diagnoses, 1721 (2.5% (95% CI 2.4% to 2.6%)) involved an ACVRa. An ACVRa was 'plausibly indicated' in 10 384 problems/diagnoses. Of these, 1228 (11.8% (95% CI 11.2% to 12.4%)) involved ACVRa. For 'all problems/diagnoses', on multivariable analysis female gender was associated with reduced odds of ACVRa (OR 0.61 (95% CI 0.54 to 0.68)). There was some evidence for Aboriginal and/or Torres Strait Islander people being more likely to receive ACVRa (OR 1.40 (95% CI 0.94 to 2.08), p=0.10). There were associations with variables related to continuity of care, with reduced odds of ACVRa: if the patient was new to the registrar (OR 0.65 (95% CI 0.57 to 0.75)), new to the practice (OR 0.24 (95% CI 0.15 to 0.38)) or the problem was new (OR 0.68 (95% CI 0.59 to 0.78)); and increased odds if personal follow-up was organised (OR 1.43 (95% CI 1.24 to 1.66)). For 'ACVRa indicated' problems/diagnoses, findings were similar to those for 'all problems/diagnoses'. Association with Aboriginal and/or Torres Strait Islander status, however, was significant at p<0.05 (OR 1.60 (95% CI 1.04 to 2.46)) and association with female gender was attenuated (OR 0.88 (95% CI 0.77 to 1.01)). CONCLUSION Continuity of care is associated with registrars assessing ACVR, reinforcing the importance of care continuity in general practice. Registrars' assessment of an individual patient's ACVR is targeted to patients with individual risk factors, but this may entail ACVRa underutilisation in female patients and younger age groups.
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Affiliation(s)
- Toby Morgan
- School of Population Health, University of New South Wales Faculty of Medicine, Kensington, New South Wales, Australia
| | - Anna Ralston
- NSW & ACT Research and Evaluation Unit, GP Synergy Ltd - Newcastle, Mayfield West, New South Wales, Australia
- School of Medicine and Public Health, The University of Newcastle, Callaghan, New South Wales, Australia
| | - Andrew Davey
- NSW & ACT Research and Evaluation Unit, GP Synergy Ltd - Newcastle, Mayfield West, New South Wales, Australia
- School of Medicine and Public Health, The University of Newcastle, Callaghan, New South Wales, Australia
| | - Elizabeth G Holliday
- School of Medicine and Public Health, The University of Newcastle, Callaghan, New South Wales, Australia
| | - Mark Nelson
- University of Tasmania Menzies Institute for Medical Research, Hobart, Tasmania, Australia
- University of Tasmania School of Medicine, Hobart, Tasmania, Australia
| | - Alison Fielding
- NSW & ACT Research and Evaluation Unit, GP Synergy Ltd - Newcastle, Mayfield West, New South Wales, Australia
- School of Medicine and Public Health, The University of Newcastle, Callaghan, New South Wales, Australia
| | - Mieke van Driel
- General Practice Clinical Unit, The University of Queensland Faculty of Medicine, Brisbane, Queensland, Australia
| | - Amanda Tapley
- NSW & ACT Research and Evaluation Unit, GP Synergy Ltd - Newcastle, Mayfield West, New South Wales, Australia
- School of Medicine and Public Health, The University of Newcastle, Callaghan, New South Wales, Australia
| | - Dominica Moad
- NSW & ACT Research and Evaluation Unit, GP Synergy Ltd - Newcastle, Mayfield West, New South Wales, Australia
- School of Medicine and Public Health, The University of Newcastle, Callaghan, New South Wales, Australia
| | - Jean Ball
- Clinical Research Design and Statistical Support Unit (CReDITSS), The University of Newcastle Hunter Medical Research Institute, New Lambton, New South Wales, Australia
| | - Jennifer Presser
- University of Tasmania School of Medicine, Hobart, Tasmania, Australia
| | - Neil Spike
- Department of General Practice and Primary Health Care, The University of Melbourne, Carlton, Victoria, Australia
- Monash University Faculty of Medicine Nursing and Health Sciences, Clayton, Victoria, Australia
| | - Parker Magin
- NSW & ACT Research and Evaluation Unit, GP Synergy Ltd - Newcastle, Mayfield West, New South Wales, Australia
- School of Medicine and Public Health, The University of Newcastle, Callaghan, New South Wales, Australia
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Alahakoon C, Singh TP, Morris D, Charles J, Fernando M, Lazzarini P, Moxon JV, Golledge J. Cohort Study Examining the Presentation, Distribution, and Outcomes of Peripheral Artery Disease in Aboriginal, Torres Strait Islander, and Non-Indigenous Australians. Eur J Vasc Endovasc Surg 2023; 66:237-244. [PMID: 37209994 DOI: 10.1016/j.ejvs.2023.05.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 05/01/2023] [Accepted: 05/12/2023] [Indexed: 05/22/2023]
Abstract
OBJECTIVE This retrospective cohort study investigated the anatomical distribution, severity, and outcome of peripheral artery disease (PAD) in Aboriginal and Torres Strait Islanders compared with non-indigenous Australians. METHODS The distribution, severity, and outcome of PAD were assessed using a validated angiographic scoring system and review of medical records in a cohort of Aboriginal and Torres Strait Islander and non-indigenous Australians. The relationship between ethnicity and PAD severity, distribution, and outcome were examined using non-parametric statistical tests, Kaplan-Meier and Cox proportional hazard analyses. RESULTS Seventy-three Aboriginal and Torres Strait Islanders and 242 non-indigenous Australians were included and followed for a median of 6.7 [IQR 2.7, 9.3] years. Aboriginal and Torres Strait Islander patients were more likely to present with symptoms of chronic limb threatening ischaemia (81% vs. 25%; p < .001), had greater median [IQR] angiographic scores for the symptomatic limb (7 [5, 10] vs. 4 [2, 7]) and tibial arteries (5 [2, 6] vs. 2 [0, 4]) and had higher risk of major amputation (HR 6.1, 95% CI 3.6 - 10.5; p < .001) and major adverse cardiovascular events (HR 1.5, 95% CI 1.0 - 2.3; p = .036) but not for revascularisation (HR 0.8, 95% CI 0.5 - 1.3; p = .37) compared with non-indigenous Australians. The associations with major amputation and major adverse cardiovascular events were no longer statistically significant when adjusted for limb angiographic score. CONCLUSION Compared with non-indigenous patients, Aboriginal and Torres Strait Islander Australians had more severe tibial artery disease and a higher risk of major amputation and major adverse cardiovascular events.
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Affiliation(s)
- Chanika Alahakoon
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Australia; Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
| | - Tejas P Singh
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Australia; The Department of Vascular and Endovascular Surgery, Townsville University Hospital, Townsville, Australia
| | - Dylan Morris
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Australia; The Department of Vascular and Endovascular Surgery, Townsville University Hospital, Townsville, Australia
| | - James Charles
- First Peoples Health Unit, Griffith University, Queensland, Australia
| | - Malindu Fernando
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Australia; Faculty of Health and Medicine, School of Health Sciences, University of Newcastle, Australia; The Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Australia
| | - Peter Lazzarini
- School of Public Health and Social Work, Queensland University of Technology, Brisbane, Australia; Allied Health Research Collaborative, Metro North Hospital and Health Service, Brisbane, Australia
| | - Joseph V Moxon
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Australia; The Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Australia
| | - Jonathan Golledge
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Australia; The Department of Vascular and Endovascular Surgery, Townsville University Hospital, Townsville, Australia; The Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Australia.
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5
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Alahakoon C, Singh TP, Galappaththy C, Charles J, Fernando M, Lazzarini P, Moxon JV, Golledge J. Risk Factors for Hospital Re-admission for Diabetes Related Foot Disease: A Prospective Cohort Study. Eur J Vasc Endovasc Surg 2023; 66:221-228. [PMID: 37196911 DOI: 10.1016/j.ejvs.2023.05.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 04/24/2023] [Accepted: 05/11/2023] [Indexed: 05/19/2023]
Abstract
OBJECTIVE Diabetes related foot disease (DFD) is a common reason for admission to hospital, but the predictive factors for repeat admission are poorly defined. The primary aim of this study was to identify rates and predictive factors for DFD related hospital re-admission. METHODS Patients admitted to hospital for treatment of DFD at a single regional centre were recruited prospectively between January 2020 and December 2020. Participants were followed for 12 months to evaluate the primary outcome of hospital re-admission. The relationship between predictive factors and re-admission were examined using non-parametric statistical tests and Cox proportional hazard analyses. RESULTS The median age of the 190 participants was 64.9 (standard deviation 13.3) years and 68.4% were male. Forty-one participants (21.6%) identified themselves as Aboriginal or Torres Strait Islander people. One hundred participants (52.6%) were re-admitted to hospital at least once over 12 months. The commonest reason for re-admission was for treatment of foot infection (84.0% of first re-admission). Absent pedal pulses (unadjusted hazard ratio [HR] 1.90; 95% confidence interval [CI] 1.26 - 2.85), loss of protective sensation (LOPS) (unadjusted HR 1.98; 95% CI 1.08 - 3.62), and male sex (unadjusted HR 1.62; 95% CI 1.03 - 2.54) increased the risk of re-admission. After risk adjustment, only absence of pedal pulses (HR 1.92, 95% CI 1.27 - 2.91) and LOPS (HR 2.02, 95% CI 1.09 - 3.74) significantly increased the risk of re-admission. CONCLUSION Over 50% of patients admitted to hospital for treatment of DFD are re-admitted within one year. Patients with absent pedal pulses and those with LOPS are twice as likely to be re-admitted.
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Affiliation(s)
- Chanika Alahakoon
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia; Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka
| | - Tejas P Singh
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia; The Department of Vascular and Endovascular Surgery, Townsville University Hospital, Townsville, Queensland, Australia
| | - Charith Galappaththy
- Faculty of Medicine, University of Peradeniya, Peradeniya, Sri Lanka; The Department of Vascular and Endovascular Surgery, Townsville University Hospital, Townsville, Queensland, Australia
| | - James Charles
- First Peoples Health Unit, Griffith University, Queensland, Australia
| | - Malindu Fernando
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia; Faculty of Health and Medicine, School of Health Sciences, University of Newcastle, Australia; The Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Queensland, Australia
| | - Peter Lazzarini
- School of Public Health and Social Work, Queensland University of Technology, Brisbane, Queensland, Australia; Allied Health Research Collaborative, Metro North Hospital and Health Service, Brisbane, Queensland, Australia
| | - Joseph V Moxon
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia; The Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Queensland, Australia
| | - Jonathan Golledge
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia; The Department of Vascular and Endovascular Surgery, Townsville University Hospital, Townsville, Queensland, Australia; The Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Queensland, Australia.
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Bruce DG, Davis WA, Davis TME. Group-Based Trajectory Modelling of Changes in Mobility over Six Years in Type 2 Diabetes: The Fremantle Diabetes Study Phase II. J Clin Med 2023; 12:4528. [PMID: 37445563 DOI: 10.3390/jcm12134528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 06/29/2023] [Accepted: 07/05/2023] [Indexed: 07/15/2023] Open
Abstract
To investigate temporal changes in mobility in community-based people with type 2 diabetes, Fremantle Diabetes Study Phase II (FDS2) data were analysed. The baseline assessment included the Timed Up and Go (TUG) test, which was repeated biennially for up to six years. Group-based trajectory modelling (GBTM) identified TUG trajectory groups in participants with ≥2 tests. Independent associates of group membership were assessed using multinomial regression. Of 1551 potential FDS2 participants, 1116 (72.0%; age 64.9 ± 11.0 years, 45.6% female) were included in the modelling. The best-fitting GBTM model identified two groups with linear, minimally changing trajectories (76.2% and 19.4% of participants; baseline TUG times 8 ± 2 and 12 ± 3 s, respectively), and a third (4.5%; baseline TUG 17 ± 5 s) with a TUG that increased over time then fell at Year 6, reflecting participant attrition. Both slower groups were older, more likely to be female, obese, and had greater diabetes-associated complications and comorbidities. Almost one-quarter of the FDS2 cohort had clinically relevant mobility impairment that persisted or worsened over six years, was multifactorial in origin, and was associated with excess late withdrawals and deaths. The TUG may have important clinical utility in assessing mobility and its consequences in adults with type 2 diabetes.
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Affiliation(s)
- David G Bruce
- Medical School, The University of Western Australia, Fremantle Hospital, Alma Street, Fremantle, WA 6160, Australia
| | - Wendy A Davis
- Medical School, The University of Western Australia, Fremantle Hospital, Alma Street, Fremantle, WA 6160, Australia
| | - Timothy M E Davis
- Medical School, The University of Western Australia, Fremantle Hospital, Alma Street, Fremantle, WA 6160, Australia
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Hamilton EJ, Davis WA, Baba M, Davis TME. Temporal trends in minor and major lower extremity amputation in people with type 2 diabetes: The Fremantle Diabetes Study. Diab Vasc Dis Res 2023; 20:14791641231154162. [PMID: 36715218 PMCID: PMC9903017 DOI: 10.1177/14791641231154162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
AIMS To determine whether incident minor and major lower extremity amputations (LEAs) have declined in recent decades in type 2 diabetes. METHODS Participants with type 2 diabetes from the community-based Fremantle Diabetes Study Phases I (FDS1; n = 1,296, mean age 64.0 years, recruited 1993-1996) and II (FDS2; n = 1,509, mean age 65.4 years, recruited 2008-2011) were followed from entry to incident minor/major LEA, death or five years. Cox regression determined hazard ratios (HRs) for each outcome for FDS2 versus FDS1 and independent predictors of incident minor and major LEA in the combined cohort. RESULTS Age- and sex-adjusted HRs (95% CIs) in FDS2 versus FDS1 for incident minor and major LEA were, respectively, 0.60 (0.27, 1.35) and 0.59 (0.22, 1.59). Higher glycated haemoglobin, urine albumin: creatinine (uACR) ratio and peripheral sensory neuropathy (PSN) were independent predictors of incident minor LEA. Higher fasting serum glucose, peripheral arterial disease (PAD), end-stage kidney disease and prior diabetes-related minor LEA were associated with incident major LEA. CONCLUSIONS There were non-significant reductions of approximately 40% in incident minor and major LEA in community-based people with type 2 diabetes during the 15 years between FDS Phases. Predictors of minor/major LEA confirm distinct high-risk patient groups with implications for clinical management.
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Affiliation(s)
- Emma J Hamilton
- Medical School, University of Western Australia, Fremantle, WA, Australia
- Endocrinology and Diabetes, Fiona Stanley Hospital, Murdoch, WA, Australia
| | - Wendy A Davis
- Medical School, University of Western Australia, Fremantle, WA, Australia
| | - Mendel Baba
- Podiatry Department, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
| | - Timothy ME Davis
- Medical School, University of Western Australia, Fremantle, WA, Australia
- Endocrinology and Diabetes, Fiona Stanley Hospital, Murdoch, WA, Australia
- Timothy ME Davis, University of Western Australia Medical School, Fremantle Hospital, PO Box 480, Fremantle, WA 6959, Australia.
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Dinh NTT, Cox IA, de Graaff B, Campbell JA, Stokes B, Palmer AJ. A Comprehensive Systematic Review of Data Linkage Publications on Diabetes in Australia. Front Public Health 2022; 10:757987. [PMID: 35692316 PMCID: PMC9174992 DOI: 10.3389/fpubh.2022.757987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 04/25/2022] [Indexed: 11/13/2022] Open
Abstract
Aims Our study aimed to identify the common themes, knowledge gaps and to evaluate the quality of data linkage research on diabetes in Australia. Methods This systematic review was developed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (the PRISMA Statement). Six biomedical databases and the Australian Population Health Research Network (PHRN) website were searched. A narrative synthesis was conducted to comprehensively identify the common themes and knowledge gaps. The guidelines for studies involving data linkage were used to appraise methodological quality of included studies. Results After screening and hand-searching, 118 studies were included in the final analysis. Data linkage publications confirmed negative health outcomes in people with diabetes, reported risk factors for diabetes and its complications, and found an inverse association between primary care use and hospitalization. Linked data were used to validate data sources and diabetes instruments. There were limited publications investigating healthcare expenditure and adverse drug reactions (ADRs) in people with diabetes. Regarding methodological assessment, important information about the linkage performed was under-reported in included studies. Conclusions In the future, more up to date data linkage research addressing costs of diabetes and its complications in a contemporary Australian setting, as well as research assessing ADRs of recently approved antidiabetic medications, are required.
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Affiliation(s)
- Ngan T T Dinh
- Health Economics Research Group, Menzies Institute for Medical Research, University of Tasmania, Hobart, TAS, Australia.,Department of Pharmacology, Thai Nguyen University of Medicine and Pharmacy, Thai Nguyen University, Thai Nguyen, Vietnam
| | - Ingrid A Cox
- Health Economics Research Group, Menzies Institute for Medical Research, University of Tasmania, Hobart, TAS, Australia
| | - Barbara de Graaff
- Health Economics Research Group, Menzies Institute for Medical Research, University of Tasmania, Hobart, TAS, Australia
| | - Julie A Campbell
- Health Economics Research Group, Menzies Institute for Medical Research, University of Tasmania, Hobart, TAS, Australia
| | - Brian Stokes
- Tasmanian Data Linkage Unit, Menzies Institute for Medical Research, University of Tasmania, Hobart, TAS, Australia
| | - Andrew J Palmer
- Health Economics Research Group, Menzies Institute for Medical Research, University of Tasmania, Hobart, TAS, Australia.,Centre for Health Policy, School of Population and Global Health, The University of Melbourne, Melbourne, VIC, Australia
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Davis WA, Chakera A, Gregg E, McAullay D, Davis TME. Temporal Trends in Renal Replacement Therapy in Community-Based People with or without Type 2 Diabetes: The Fremantle Diabetes Study. J Clin Med 2022; 11:jcm11030695. [PMID: 35160152 PMCID: PMC8837160 DOI: 10.3390/jcm11030695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/18/2022] [Accepted: 01/26/2022] [Indexed: 02/05/2023] Open
Abstract
Background: Although rates of cardiovascular disease complicating type 2 diabetes are declining, equivalent data for renal replacement therapy (RRT) are conflicting. The aim of this study was to characterize temporal changes in RRT incidence rates (IRs) in Australians with or without type 2 diabetes. Methods: Participants with type 2 diabetes from the Fremantle Diabetes Study Phases I (FDS1; n = 1291 recruited 1993–1996) and II (FDS2; n = 1509 recruited 2008–2011) were age-, sex- and postcode-matched 1:4 to people without diabetes and followed for first hospitalization for/with RRT. Five-year IRs, IR ratios (IRRs) for those with versus without diabetes in FDS1 and FDS2, and IR differences (IRDs), were calculated. Results: The 13,995 participants had a mean age of 64.8 years and 50.4% were males. For the type 2 diabetes cohorts, the 5-year RRT IR was nearly threefold higher in FDS2 versus FDS1 (IRR (95% CI): 2.85 (1.01–9.87)). Sixteen more participants with type 2 diabetes/10,000 person-years received RRT in FDS2 than FDS1 compared with an IRD of 2/10,000 person-years in those without diabetes. Type 2 diabetes increased RRT risk at least 5-fold. This increased risk was greater in Aboriginal participants who were relatively young when RRT was initiated and more prone to rapid progression to RRT. Multivariable analysis using the combined FDS type 2 diabetes cohorts confirmed albuminuria as a strong independent RRT risk factor. Conclusions: The incidence of RRT is increasing substantially in Australians with type 2 diabetes, especially in Aboriginals who progress to RRT more rapidly at a younger age than non-Aboriginals.
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Affiliation(s)
- Wendy A. Davis
- Medical School, The University of Western Australia, Crawley, WA 6009, Australia; (W.A.D.); (A.C.)
| | - Aron Chakera
- Medical School, The University of Western Australia, Crawley, WA 6009, Australia; (W.A.D.); (A.C.)
- Department of Renal Medicine, Sir Charles Gairdner Hospital, Nedlands, WA 6009, Australia
| | - Edward Gregg
- School of Public Health, Imperial College London, London SW7 2BX, UK;
| | - Daniel McAullay
- Kurongkurl Katitjin Centre for Indigenous Australian Education and Research, Edith Cowan University, Mount Lawley, WA 6050, Australia;
| | - Timothy M. E. Davis
- Medical School, The University of Western Australia, Crawley, WA 6009, Australia; (W.A.D.); (A.C.)
- Correspondence: ; Tel.: +61-(8)-94-313-229; Fax: +61-(8)-94-312-977
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10
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Singh TP, Moxon JV, Meehan MT, Jones R, Cadet-James Y, Golledge J. Major amputation rates and outcomes for Aboriginal and Torres Strait Islander and non-Indigenous people in North Queensland Australia between 2000 and 2015. BMC Endocr Disord 2021; 21:101. [PMID: 34020627 PMCID: PMC8139111 DOI: 10.1186/s12902-021-00764-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 05/10/2021] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND This study estimated the incidence of major amputation for people in North Queensland, Australia, examined changes in amputation rates over time and investigated survival after major amputation. METHODS This was a retrospective study of patients who underwent a major amputation above the ankle between 2000 and 2015. Major amputation rates and incidence rate ratios (IRR) were calculated using census data to define the at-risk population. Associations between risk factors and calendar year with major amputation were assessed using quasipoisson regression. Kaplan-Meier survival and Cox-proportional hazard analyses estimated the incidence of and risk factors for all-cause mortality. RESULTS The annual incidence of major amputation was estimated to be greater in Aboriginal and Torres Strait Islanders than non-Indigenous people (IRR 2.75, 95 % CI 1.92 to 3.84). After adjusting for population growth, the annual incidence of major amputations did not change significantly over time for either groups. Aboriginal and Torres Strait Islander people were at greater risk of all-cause mortality after major amputation compared to non-Indigenous people, although this association was not significant after adjusting for other risk factors (hazard ratio 1.24, 95 % CI 0.82 to 1.90). CONCLUSIONS The incidence of major amputation in North Queensland has not reduced over time, indicating the need for better preventative treatments, particularly in Aboriginal and Torres Strait Islander people.
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Affiliation(s)
- Tejas P Singh
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, 4811, Townsville, Queensland, Australia
- The Department of Vascular and Endovascular Surgery, The Townsville University Hospital, Townsville, Queensland, Australia
| | - Joseph V Moxon
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, 4811, Townsville, Queensland, Australia
- The Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Queensland, Australia
| | - Michael T Meehan
- The Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Queensland, Australia
| | - Rhondda Jones
- The Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Queensland, Australia
| | - Yvonne Cadet-James
- Anton Breinl Research Centre for Health Systems Strengthening, Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Queensland, Australia
| | - Jonathan Golledge
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, 4811, Townsville, Queensland, Australia.
- The Department of Vascular and Endovascular Surgery, The Townsville University Hospital, Townsville, Queensland, Australia.
- The Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Queensland, Australia.
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11
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Power T, East L, Gao Y, Usher K, Jackson D. A mixed-methods evaluation of an urban Aboriginal diabetes lifestyle program. Aust N Z J Public Health 2021; 45:143-149. [PMID: 33749953 DOI: 10.1111/1753-6405.13092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 01/01/2021] [Accepted: 02/01/2021] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE The objective of this study was to evaluate an Aboriginal-led diabetes lifestyle program catering to urban Aboriginal people in an Aboriginal organisation. METHODS Mixed-methods study that employed routinely collected physiological data and audio-recorded focus group sessions. Physiological data were analysed using a multi-level model to account for participant clustering. Qualitative data were subject to thematic analysis. RESULTS Participants were overwhelmingly positive about the program. They lost weight and improved their diastolic blood pressure and glycaemic control; however, it was the feelings of belonging and optimism about their ability to improve their health that they most valued. Qualitative analysis revealed three main themes. These were: 'With the Mob', 'For the Mob' and 'Program Elements. The strengths of the program lay in its indigeneity, low-cost and easy-to-prepare diet, and cultural and communication skills of the director. CONCLUSIONS Recommendations for improvement included educating participants on the pathophysiology of diabetes, the refinement of online elements and the introduction of face-to-face group exercise. Implications for public health: Programs of this nature should be expanded and evaluated longitudinally with multiple cohorts.
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Affiliation(s)
- Tamara Power
- Susan Wakil School of Nursing and Midwifery, University of Sydney, New South Wales
| | - Leah East
- School of Health, University of New England, New South Wales
| | - Yu Gao
- Molly Wardaguga Research Centre, College of Nursing and Midwifery, Charles Darwin University, Queensland
| | - Kim Usher
- School of Health, University of New England, New South Wales
| | - Debra Jackson
- Susan Wakil School of Nursing and Midwifery, University of Sydney, New South Wales
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12
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Zhang Y, van Netten JJ, Baba M, Cheng Q, Pacella R, McPhail SM, Cramb S, Lazzarini PA. Diabetes-related foot disease in Australia: a systematic review of the prevalence and incidence of risk factors, disease and amputation in Australian populations. J Foot Ankle Res 2021; 14:8. [PMID: 33468226 PMCID: PMC7816323 DOI: 10.1186/s13047-021-00447-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 01/06/2021] [Indexed: 01/13/2023] Open
Abstract
Background Diabetes-related foot disease (DFD) is a leading cause of global hospitalisation, amputation and disability burdens; yet, the epidemiology of the DFD burden is unclear in Australia. We aimed to systematically review the literature reporting the prevalence and incidence of risk factors for DFD (e.g. neuropathy, peripheral artery disease), of DFD (ulcers and infection), and of diabetes-related amputation (total, minor and major amputation) in Australian populations. Methods We systematically searched PubMed and EMBASE databases for peer-reviewed articles published until December 31, 2019. We used search strings combining key terms for prevalence or incidence, DFD or amputation, and Australia. Search results were independently screened for eligibility by two investigators. Publications that reported prevalence or incidence of outcomes of interest in geographically defined Australian populations were eligible for inclusion. Included studies were independently assessed for methodological quality and key data were extracted by two investigators. Results Twenty publications met eligibility and were included. There was high heterogeneity for populations investigated and methods used to identify outcomes. We found within diabetes populations, the prevalence of risk factors ranged from 10.0–58.8%, of DFD from 1.2–1.5%, and the incidence of diabetes-related amputation ranged from 5.2–7.2 per 1000 person-years. Additionally, the incidence of DFD-related hospitalisation ranged from 5.2–36.6 per 1000 person-years within diabetes populations. Furthermore, within inpatients with diabetes, we found the prevalence of risk factors ranged from 35.3–43.3%, DFD from 7.0–15.1% and amputation during hospitalisation from 1.4–5.8%. Conclusions Our review suggests a similar risk factor prevalence, low but uncertain DFD prevalence, and high DFD-related hospitalisation and amputation incidence in Australia compared to international populations. These findings may suggest that a low proportion of people with risk factors develop DFD, however, it is also possible that there is an underestimation of DFD prevalence in Australia in the few limited studies, given the high incidence of hospitalisation and amputation because of DFD. Either way, studies of nationally representative populations using valid outcome measures are needed to verify these DFD-related findings and interpretations. Supplementary Information The online version contains supplementary material available at 10.1186/s13047-021-00447-x.
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Affiliation(s)
- Yuqi Zhang
- Australian Centre for Health Services Innovation and Centre for Healthcare Translation, School of Public Health and Social Work, Queensland University of Technology, 60 Musk Ave, Kelvin Grove, Brisbane, QLD, Australia
| | - Jaap J van Netten
- Australian Centre for Health Services Innovation and Centre for Healthcare Translation, School of Public Health and Social Work, Queensland University of Technology, 60 Musk Ave, Kelvin Grove, Brisbane, QLD, Australia.,Amsterdam UMC, University of Amsterdam, Department of Rehabilitation, Amsterdam Movement Sciences, Meibergdreef 9, Amsterdam, the Netherlands
| | - Mendel Baba
- Podiatry Department, Sir Charles Gairdner Hospital, Perth, Australia
| | - Qinglu Cheng
- The Kirby Institute, University of New South Wales, Sydney, Australia
| | - Rosana Pacella
- Institute for Lifecourse Development, University of Greenwich, London, UK
| | - Steven M McPhail
- Australian Centre for Health Services Innovation and Centre for Healthcare Translation, School of Public Health and Social Work, Queensland University of Technology, 60 Musk Ave, Kelvin Grove, Brisbane, QLD, Australia.,Clinical Informatics Directorate, Metro South Health, Brisbane, Australia
| | - Susanna Cramb
- Australian Centre for Health Services Innovation and Centre for Healthcare Translation, School of Public Health and Social Work, Queensland University of Technology, 60 Musk Ave, Kelvin Grove, Brisbane, QLD, Australia
| | - Peter A Lazzarini
- Australian Centre for Health Services Innovation and Centre for Healthcare Translation, School of Public Health and Social Work, Queensland University of Technology, 60 Musk Ave, Kelvin Grove, Brisbane, QLD, Australia. .,Allied Health Research Collaborative, The Prince Charles Hospital, Brisbane, Australia.
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13
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Sainsbury E, Shi Y, Flack J, Colagiuri S. The diagnosis and management of diabetes in Australia: Does the "Rule of Halves" apply? Diabetes Res Clin Pract 2020; 170:108524. [PMID: 33164851 DOI: 10.1016/j.diabres.2020.108524] [Citation(s) in RCA: 4] [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: 06/17/2020] [Revised: 09/10/2020] [Accepted: 10/15/2020] [Indexed: 01/17/2023]
Abstract
The Rule of Halves (ROH) is a theoretical framework which states that roughly half of all people with a condition are diagnosed; half of those diagnosed receive care; half of those who receive care achieve their treatment targets; and half of those who reach their targets achieve the desired treatment outcomes. This review examined the applicability of the ROH to diabetes in Australia. Five databases were searched for articles and government reports published between January 2000 and August 2019. Data was extracted for each level of the framework, and pooled sample proportions calculated for the total population and sub-group analysis by ethnicity and type of diabetes. The results showed that 72% of people with diabetes are diagnosed. Approximately 50% are receiving standard care, and 40-60% are meeting treatment targets for HbA1c, blood pressure and lipid levels. Overall, Australia is doing better than the ROH when it comes to achieving treatment outcomes; prevalence of microvascular complications was 20-30% and cardiovascular disease 62%. Indigenous people were less likely to meet treatment targets and more likely to experience adverse complications of diabetes. This review indicates the ROH does generally apply for diabetes care and management in Australia, highlighting the need for further improvement.
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Affiliation(s)
- Emma Sainsbury
- University of Sydney, Charles Perkins Centre, Boden Collaboration for Obesity, Nutrition, Exercise and Eating Disorders, Australia.
| | - Yumeng Shi
- University of Sydney, Charles Perkins Centre, Boden Collaboration for Obesity, Nutrition, Exercise and Eating Disorders, Australia.
| | - Jeff Flack
- Department of Diabetes and Endocrinology, Bankstown-Lidcombe Hospital, Sydney, NSW, Australia; Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia; School of Medicine, Western Sydney University, Sydney NSW, Australia.
| | - Stephen Colagiuri
- University of Sydney, Charles Perkins Centre, Boden Collaboration for Obesity, Nutrition, Exercise and Eating Disorders, Australia.
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14
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Drinkwater JJ, Davis WA, Turner AW, McAullay D, Davis TME. Differences in retinopathy prevalence and progression between Anglo-Celt and Aboriginal Australians: the Fremantle Diabetes Study Phase II. Intern Med J 2020; 52:590-598. [PMID: 33040394 DOI: 10.1111/imj.15090] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 10/08/2020] [Accepted: 10/08/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Indigenous populations have higher rates of diabetes and diabetic complications, yet there is a paucity of contemporary data on diabetic retinopathy (DR) prevalence and incidence in urban dwelling Aboriginal Australians. AIMS The aim of the study was to compare the prevalence of DR and incidence of new or worsening DR between Aboriginal Australians and Anglo-Celts with Type 2 diabetes. METHODS Participants from the community-based Fremantle Diabetes Study Phase II (817 Anglo-Celts, 94 Aboriginal people) recruited between 2008 and 2011 underwent fundus photography at baseline and biennial reviews. The prevalence of any DR and moderate non-proliferative DR (NPDR), and the incidence of new or worsening DR were ascertained using baseline and 4-year follow-up data. RESULTS Compared with Anglo-Celts, the Aboriginal participants had a higher prevalence of any DR (33.0% vs 52.1%) and moderate NPDR or worse (5.1% vs 24.4%), and new or worsening DR during follow up (6.7% vs 23.5%). The unadjusted odds ratios (95% confidence interval) of any DR and moderate NPDR at baseline were 2.21 (1.43, 3.39) and 5.98 (3.40, 10.50), respectively, and of new or worsening DR 4.32 (1.33, 13.98). In adjusted models, Aboriginal ethnicity was only associated with the prevalence of moderate NPDR or worse (5.58 (2.44, 12.76)). CONCLUSIONS Aboriginal participants had a higher prevalence of DR and new or worsening DR, reflecting conventional risk factors including suboptimal glycaemic control. Their significantly higher odds of moderate NPDR or worse in adjusted models suggest ethnic-specific determinants of DR severity. These findings highlight the need for equitable, culturally appropriate diabetes/ophthalmic care.
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Affiliation(s)
- Jocelyn J Drinkwater
- Medical School, The University of Western Australia, Fremantle Hospital, Perth, Western Australia, Australia
| | - Wendy A Davis
- Medical School, The University of Western Australia, Fremantle Hospital, Perth, Western Australia, Australia
| | - Angus W Turner
- Lions Eye Institute, Perth, Western Australia, Australia.,Centre for Ophthalmology and Visual Science, University of Western Australia, Perth, Western Australia, Australia
| | - Daniel McAullay
- Kurongkurl Katitjin, Edith Cowan University, Perth, Western Australia, Australia
| | - Timothy M E Davis
- Medical School, The University of Western Australia, Fremantle Hospital, Perth, Western Australia, Australia
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15
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Davis WA, Hellbusch V, Hunter ML, Bruce DG, Davis TME. Contemporary Cardiovascular Risk Assessment for Type 2 Diabetes Including Heart Failure as an Outcome: The Fremantle Diabetes Study Phase II. J Clin Med 2020; 9:jcm9051428. [PMID: 32403446 PMCID: PMC7290870 DOI: 10.3390/jcm9051428] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 05/08/2020] [Accepted: 05/08/2020] [Indexed: 01/10/2023] Open
Abstract
Background: Type 2 diabetes (T2D) cardiovascular disease (CVD) risk assessment has limitations. The aim of this study was to develop a risk equation adding heart failure (HF) to conventional major adverse cardiovascular events (MACE, myocardial infarction, stroke, and CVD death) and allowing for non-CVD death. Methods: 1551 community-based people with T2D (mean age 66 years, 52% males) were followed from baseline in 2008–2011 for five years to the first CVD event/death. Cox and competing risk regression identified predictors of three-point MACE and four-point MACE (including HF). Discrimination was assessed by the area under the receiver-operating characteristic curve (AUC) and calibration by the Hosmer-Lemeshow test. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were determined for a 10% five-year CVD risk cut-off. Results: 143 participants (9.2%) experienced a three-point MACE during 7,111 person-years of follow-up and 245 (15.8%) a four-point MACE during 6,896 person-years. The best model was the competing risk four-point MACE (221 predicted events (14.3%), AUC 0.82 (95% CI: 0.79–0.85), Hosmer-Lemeshow test, p = 0.17, sensitivity 79.2%, specificity 68.1%, PPV 31.8%, NPV 94.6%) with validation in 177 adults with T2D from an independent population (AUC 0.81 (0.74–0.89). Conclusions: A validated four-point MACE competing risk model reliably predicts key T2D CVD outcomes.
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Affiliation(s)
- Wendy A. Davis
- Medical School, The University of Western Australia, Fremantle Hospital, PO Box 480, Fremantle, WA 6959, Australia; (W.A.D.); (V.H.); (D.G.B.)
| | - Valentina Hellbusch
- Medical School, The University of Western Australia, Fremantle Hospital, PO Box 480, Fremantle, WA 6959, Australia; (W.A.D.); (V.H.); (D.G.B.)
| | - Michael L. Hunter
- Busselton Population Medical Research Institute, Busselton, WA 6280, Australia;
| | - David G. Bruce
- Medical School, The University of Western Australia, Fremantle Hospital, PO Box 480, Fremantle, WA 6959, Australia; (W.A.D.); (V.H.); (D.G.B.)
| | - Timothy M. E. Davis
- Medical School, The University of Western Australia, Fremantle Hospital, PO Box 480, Fremantle, WA 6959, Australia; (W.A.D.); (V.H.); (D.G.B.)
- Correspondence: ; Tel.: +618-9431-3229; Fax: +618-9431-2977
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16
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Drinkwater JJ, Davis TME, Hellbusch V, Turner AW, Bruce DG, Davis WA. Retinopathy predicts stroke but not myocardial infarction in type 2 diabetes: the Fremantle Diabetes Study Phase II. Cardiovasc Diabetol 2020; 19:43. [PMID: 32234054 PMCID: PMC7110810 DOI: 10.1186/s12933-020-01018-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 03/19/2020] [Indexed: 12/22/2022] Open
Abstract
Background Microangiopathy in type 2 diabetes (T2D) is associated with cardiovascular disease (CVD), but most relevant studies were performed > 10 years ago. CVD risk factor management has since improved. The aim of this study was to determine whether diabetic retinopathy (DR) and its severity increases stroke and myocardial infarction (MI) risk in a contemporary cohort. Methods Fremantle Diabetes Study Phase II participants with T2D had DR graded from fundus photography at baseline between 2008 and 2011. Subsequent hospitalizations and mortality for MI or stroke were ascertained through validated data linkage to end-2016. Cox regression modelling identified predictors of first stroke and MI including DR presence and severity. Results The 1521 participants with T2D and known DR status (mean age 65.6 years, 52.1% males, median diabetes duration 9.0 years) were followed for a mean of 6.6 years. After excluding those with prior MI/stroke, there were 126 incident MIs among 1393 eligible participants and 53 incident strokes in 1473 eligible participants, respectively. Moderate non-proliferative DR (NPDR) or worse was significantly and independently associated with an increased risk of incident stroke (adjusted hazard ratio 2.55 (95% CI 1.19, 5.47), p = 0.016). Retinopathy presence and severity increased the risk of incident MI in unadjusted models (p ≤ 0.001), but these associations were no longer statistically significant after adjusting for other risk factors. Conclusions Moderate NPDR or worse was associated with an increased risk of first stroke in Australians with T2D. Intensified CVD risk factor management should be considered for patients with at least moderate NPDR.
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Affiliation(s)
- Jocelyn J Drinkwater
- Medical School, The University of Western Australia, Fremantle Hospital, P. O. Box 480, Fremantle, WA, 6959, Australia
| | - Timothy M E Davis
- Medical School, The University of Western Australia, Fremantle Hospital, P. O. Box 480, Fremantle, WA, 6959, Australia.
| | - Valentina Hellbusch
- Medical School, The University of Western Australia, Fremantle Hospital, P. O. Box 480, Fremantle, WA, 6959, Australia
| | - Angus W Turner
- Lions Eye Institute, Nedlands, WA, Australia.,Centre for Ophthalmology and Visual Science, University of Western Australia, Crawley, WA, Australia
| | - David G Bruce
- Medical School, The University of Western Australia, Fremantle Hospital, P. O. Box 480, Fremantle, WA, 6959, Australia
| | - Wendy A Davis
- Medical School, The University of Western Australia, Fremantle Hospital, P. O. Box 480, Fremantle, WA, 6959, Australia
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17
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Mayberry LS, Lyles CR, Oldenburg B, Osborn CY, Parks M, Peek ME. mHealth Interventions for Disadvantaged and Vulnerable People with Type 2 Diabetes. Curr Diab Rep 2019; 19:148. [PMID: 31768662 PMCID: PMC7232776 DOI: 10.1007/s11892-019-1280-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Mobile- and Internet-delivered (collectively, digital) interventions are widely used by persons with diabetes (PWD) to assist with self-management and improve/maintain glycemic control (hemoglobin A1c [A1c]). However, evidence concerning the acceptance and benefits of such interventions among disadvantaged/vulnerable PWD is still quite limited. PURPOSE OF REVIEW We reviewed studies published from 2011-April 2019 evaluating the impact of diabetes self-management interventions delivered via mobile device and/or Internet on glycemic control of disadvantaged/vulnerable adults with type 2 diabetes (T2D). Included studies reported ≥ 50% of the sample having a low socioeconomic status and/or being a racial/ethnic minority, or living in a rural setting or low-/middle-income country (LMIC). We identified 21 studies evaluating a digital intervention among disadvantaged/vulnerable PWD. RECENT FINDINGS Although many digital interventions found within-group A1c improvements (16 of 21 studies), only seven of the seventeen studies with a control group found between-group differences in A1c. Three studies found reductions in emergency room (ER) visits and hospitalizations. We synthesize this information, and provide recommendations for increasing access, and improving the design and usability of such interventions. We also discuss the role of human support in digital delivery, issues related to study design, reporting, economic value, and available research in LMICs. There is evidence suggesting that digital interventions can improve diabetes control, healthcare utilization, and healthcare costs. More research is needed to substantiate these early findings, and many issues remain in order to optimize the impact of digital interventions on the health outcomes of disadvantaged/vulnerable persons with diabetes.
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Affiliation(s)
| | | | | | | | - Makenzie Parks
- Vanderbilt University Medical Center, Nashville, TN, USA
| | - Monica E Peek
- Section of General Internal Medicine, Chicago Center for Diabetes Translation Research, The University of Chicago, 5841 S. Maryland Avenue, MC 2007, Chicago, IL, 60637, USA.
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18
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Davis WA, Hamilton EJ, Bruce DG, Davis TME. Development and Validation of a Simple Hip Fracture Risk Prediction Tool for Type 2 Diabetes: The Fremantle Diabetes Study Phase I. Diabetes Care 2019; 42:102-109. [PMID: 30455327 DOI: 10.2337/dc18-1486] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 10/12/2018] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To develop a type 2 diabetes hip fracture risk tool in community-based patients, to validate it in an independent cohort, and to compare its performance against the only published prediction equation to include type 2 diabetes as a risk factor (QFracture). RESEARCH DESIGN AND METHODS Hip fracture hospitalizations in 1,251 participants with type 2 diabetes aged 40-89 years from the longitudinal Fremantle Diabetes Study Phase I (FDS1) were ascertained between entry (1993-1996) and end-2012. Competing risk regression modeling determined independent predictors of time to first fracture over 10 years and the coefficients incorporated in a risk model. The model was validated in 286 participants with type 2 diabetes from the Busselton Health Study (BHS). RESULTS Fifty FDS1 participants (4.0%) experienced a first hip fracture during 10,306 person-years of follow-up. Independent predictors of fracture were older age, female sex, lower BMI, peripheral sensory neuropathy, and estimated glomerular filtration rate <45 mL/min/1.73 m2. The model-predicted mean 10-year incident fracture risk was 3.3% with good discrimination, calibration, and accuracy. For a 3% cutoff, sensitivity was 76.0%, specificity 71.9%, positive predictive value (PPV) 10.1%, and negative predictive value (NPV) 98.6%. Model performance in the small BHS sample was also good (sensitivity 66.7%, specificity 79.8%, PPV 6.2%, and NPV 99.2%). QFracture performed well in FDS1 but required availability of 25 variables. CONCLUSIONS The FDS1 hip fracture risk equation is a simple validated adjunct to type 2 diabetes management that uses variables that are readily available in routine care.
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Affiliation(s)
- Wendy A Davis
- Medical School, The University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia
| | - Emma J Hamilton
- Medical School, The University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia.,Department of Endocrinology and Diabetes, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
| | - David G Bruce
- Medical School, The University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia
| | - Timothy M E Davis
- Medical School, The University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia
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19
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Hamilton EJ, Drinkwater JJ, Chubb SAP, Rakic V, Kamber N, Zhu K, Prince RL, Davis WA, Davis TME. A 10-Year Prospective Study of Bone Mineral Density and Bone Turnover in Males and Females With Type 1 Diabetes. J Clin Endocrinol Metab 2018; 103:3531-3539. [PMID: 30032248 DOI: 10.1210/jc.2018-00850] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 07/13/2018] [Indexed: 12/20/2022]
Abstract
CONTEXT In a previous community-based, cross-sectional study, males with type 1 diabetes (T1D) had lower bone mineral density (BMD) than did matched people without diabetes but females with T1D had normal BMD. OBJECTIVE To determine whether BMD in the males continued to decline, the neutral effect of T1D on BMD in females persisted, and whether temporal BMD changes reflected changes in bone turnover markers. DESIGN Longitudinal observational study. SETTING Urban community. PATIENTS Forty-eight of the original 102 original cross-sectional study participants (20 males, 28 females) of mean age 42.0 years and median diabetes duration 14.6 years at baseline who were restudied a mean of 10.3 years later. MAIN OUTCOME MEASURES BMD at total hip, femoral neck, lumbar spine (L1 to L4), and distal forearm. Biochemical bone turnover markers. RESULTS After adjustment for age, body mass index (BMI), and renal function, there was no temporal change in BMD at the hip or forearm in the males (P ≥ 0.12), but lumbar spine BMD increased (P = 0.009). Females exhibited no statistically significant change in BMD in similar multivariable models that also included postmenopausal status, except a mild increase at the forearm (P = 0.046). Age- and sex-related changes in bone turnover markers paralleled those in general population studies. CONCLUSIONS There is a reduction in BMD in males with T1D that occurs early in the course of the disease but then stabilizes. BMD in females with T1D remains similar to that expected for age, BMI, and postmenopausal status.
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Affiliation(s)
- Emma J Hamilton
- Medical School, University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia
- Department of Endocrinology and Diabetes, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
- Medical School, University of Western Australia, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
| | - Jocelyn J Drinkwater
- Medical School, University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia
| | - S A Paul Chubb
- Medical School, University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia
- Biochemistry Department, PathWest, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
| | - Valentina Rakic
- Medical School, University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia
| | - Niklaus Kamber
- Department of Endocrinology, Kantonsspital Graubünden, Chur, Switzerland
| | - Kun Zhu
- Department of Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
- Medical School, University of Western Australia, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
| | - Richard L Prince
- Department of Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
- Medical School, University of Western Australia, Sir Charles Gairdner Hospital, Nedlands, Western Australia, Australia
| | - Wendy A Davis
- Medical School, University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia
| | - Timothy M E Davis
- Medical School, University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia
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Singh TP, Moxon JV, Healy GN, Cadet-James Y, Golledge J. Presentation and outcomes of indigenous Australians with peripheral artery disease. BMC Cardiovasc Disord 2018; 18:94. [PMID: 29769031 PMCID: PMC5956730 DOI: 10.1186/s12872-018-0835-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 05/09/2018] [Indexed: 12/01/2022] Open
Abstract
Background The risk factors for peripheral artery disease (PAD) are more common in Indigenous than non-Indigenous Australians, however the presentation and outcome of PAD in Indigenous Australians has not been previously investigated. The aim of this prospective cohort study was to compare the presenting characteristics and clinical outcome of Indigenous and non-Indigenous Australians with PAD. Methods PAD patients were prospectively recruited and followed-up since 2003 from an outpatient vascular clinic in Townsville, Australia. Presenting symptoms and risk factors in Indigenous and non-Indigenous patients were compared using Pearson’s χ2 test and Mann Whitney U test. Kaplan Meier survival analysis and Cox proportional hazard analysis were used to compare the incidence of myocardial infarction (MI), stroke or death (major cardiovascular events) among Indigenous and non-Indigenous patients. Results Four hundred and one PAD patients were recruited, of which 16 were Indigenous and 385 were non-Indigenous Australians. Indigenous Australians were younger at entry (median age 63.3 [54.7–67.8] vs 69.6 [63.3–75.4]), more commonly current smokers (56.3% vs 31.4%), and more frequently had insulin-treated diabetes (18.8% vs 5.2%). During a median follow-up of 2.5 years, five and 45 major cardiovascular events were recorded amongst Indigenous and non-Indigenous Australians, respectively. Indigenous Australians were at ~ 5-fold greater risk of major cardiovascular events (adjusted hazard ratio 4.72 [95% confidence intervals 1.41–15.78], p = 0.012) compared to non-Indigenous Australians. Conclusions These findings suggest that Indigenous Australians with PAD present at a younger age, have higher rates of smoking and insulin-treated diabetes, and poorer clinical outcomes compared to non-Indigenous Australians.
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Affiliation(s)
- Tejas P Singh
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD, 4811, Australia.,The Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, QLD, Australia.,The University of Queensland, School of Public Health, Herston, QLD, Australia
| | - Joseph V Moxon
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD, 4811, Australia
| | - Genevieve N Healy
- The University of Queensland, School of Public Health, Herston, QLD, Australia
| | | | - Jonathan Golledge
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD, 4811, Australia. .,The Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, QLD, Australia.
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Davis TME, Chubb SAP, Curtis BH, Barraclough H, Davis WA. Temporal changes in glycaemic thresholds for treatment intensification in type 2 diabetes in an urban Australian setting: the Fremantle Diabetes Study. Intern Med J 2017; 48:1215-1221. [PMID: 29230931 DOI: 10.1111/imj.13710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 11/20/2017] [Accepted: 12/04/2017] [Indexed: 11/28/2022]
Abstract
BACKGROUND Pharmacotherapy and supportive care for diabetes in Australia are improving, with potential beneficial effects on therapeutic procrastination. AIM To determine whether glycaemic thresholds for therapeutic intensification in type 2 diabetes changed over the 15 years between phases of the community-based Fremantle Diabetes Study (FDS). METHODS We studied 531 Phase 1 participants (mean age 62.4 years, 54.2% males, median diabetes duration 3.0 years) with valid data from baseline assessment and five subsequent annual reviews between 1993 and 2001 and 930 Phase 2 participants (mean age 65.3 years, 53.8% males, median diabetes duration 8.0 years) with valid data from baseline and two subsequent biennial reviews between 2008 and 2015. The main outcome measure was HbA1c at assessments before and after change in blood glucose-lowering therapy (average 6 months in Phase 1, 12 months in Phase 2). RESULTS Ninety-seven participants in Phase 1 and 84 in Phase 2 progressed from diet-based management to oral hypoglycaemic agents (OHA) and 45 and 85 participants, respectively, progressed from diet/OHA to insulin. The median HbA1c was 7.5% (58 mmol/mol) and 6.9% (52 mmol/mol) before OHA initiation in Phases 1 and 2, respectively, and 9.1% (76 mmol/mol) and 7.8% (62 mmol/mol), respectively, before insulin initiation. There were median HbA1c falls of 0.3% (3 mmol/mol) and 1.5% (16 mmol/mol) after OHA and insulin initiation in Phase 1, but no statistically significant changes in Phase 2. CONCLUSIONS HbA1c thresholds triggering treatment intensification fell between FDS phases, suggesting a more proactive approach to management of glycaemia over time.
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Affiliation(s)
- Timothy M E Davis
- School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia
| | - Stephen A P Chubb
- Department of Biochemistry, PathWest Laboratory Medicine WA, Fremantle Hospital, Fremantle, Western Australia, Australia
| | - Bradley H Curtis
- Eli Lilly Australia and New Zealand, Sydney, New South Wales, Australia
| | - Helen Barraclough
- Eli Lilly Australia and New Zealand, Sydney, New South Wales, Australia
| | - Wendy A Davis
- School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia
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22
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West M, Chuter V, Munteanu S, Hawke F. Defining the gap: a systematic review of the difference in rates of diabetes-related foot complications in Aboriginal and Torres Strait Islander Australians and non-Indigenous Australians. J Foot Ankle Res 2017; 10:48. [PMID: 29151893 PMCID: PMC5678749 DOI: 10.1186/s13047-017-0230-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Accepted: 10/25/2017] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND The Aboriginal and Torres Strait Islander community has an increased risk of developing chronic illnesses including diabetes. Among people with diabetes, foot complications are common and make a significant contribution to the morbidity and mortality associated with this disease. The aim of this review was to systematically evaluate the literature comparing the rates of diabetes related foot complications in Aboriginal and Torres Strait Islander Australians to non-Indigenous Australians. METHODS MEDLINE, EMBASE, The Cochrane Library; PUBMED and CINAHL were searched from inception until August 2016. Inclusion criteria were: published cross-sectional or longitudinal studies reporting the prevalence of diabetes related foot complications in both a cohort of Aboriginal and Torres Strait Islander Australians and a cohort of one other Australian population of any age with diabetes. Risk of bias was assessed using the STROBE tool. RESULTS Eleven studies including a total of 157,892 participants were included. Studies were set in Queensland, the Northern Territory and Western Australia, primarily in rural and remote areas. Aboriginal and Torres Strait Islander Australians experienced substantially more diabetes related foot complications with the mean age up to 14 years younger than non-Indigenous Australians. Aboriginality was associated with increased risk of peripheral neuropathy, foot ulceration and amputation. In several studies, Aboriginal and Torres Strait Islander Australians accounted for the vast majority of diabetes related foot complications (up to 91%) while comprising only a small proportion of the regional population. Reporting quality as assessed with the STROBE tool showed underreporting of: methods, sample description and potential sources of bias. There are no data available for some Australian states and for specific types of diabetes related foot complications. CONCLUSIONS Aboriginal and Torres Strait Islander Australians have a 3-6 fold increased likelihood of experiencing a diabetes related foot complication compared to non-Indigenous Australians. Evidence-based, culturally appropriate screening and intervention programs and improved access to effective health care services are required to prevent a widening of the gap in diabetes related foot complications between Aboriginal and Torres Strait Islander and non-Indigenous Australians.
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Affiliation(s)
- Matthew West
- Discipline of Podiatry, Faculty of Health and Medicine, University of Newcastle, Box 127, Ourimbah, PO 2258 Australia
| | - Vivienne Chuter
- Discipline of Podiatry, Faculty of Health and Medicine, University of Newcastle, Box 127, Ourimbah, PO 2258 Australia
| | - Shannon Munteanu
- Discipline of Podiatry, School of Allied Health, College of Science, Health and Engineering, La Trobe University, Melbourne, Australia
- La Trobe Sport and Exercise Medicine Research Centre, College of Science, Health and Engineering, La Trobe University, Melbourne, Australia
| | - Fiona Hawke
- Discipline of Podiatry, Faculty of Health and Medicine, University of Newcastle, Box 127, Ourimbah, PO 2258 Australia
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Davis TME, Drinkwater J, Davis WA. Proton Pump Inhibitors, Nephropathy, and Cardiovascular Disease in Type 2 Diabetes: The Fremantle Diabetes Study. J Clin Endocrinol Metab 2017; 102:2985-2993. [PMID: 28591820 DOI: 10.1210/jc.2017-00354] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 06/02/2017] [Indexed: 02/12/2023]
Abstract
CONTEXT There is emerging evidence of various adverse effects of chronic proton pump inhibitor (PPI) therapy. OBJECTIVE To assess the impact of PPI use on nephropathy and cardiovascular disease (CVD) risk in type 2 diabetes. DESIGN Longitudinal observational study. SETTING Urban-dwelling community. PATIENTS Patients with type 2 diabetes from the Fremantle Diabetes Study Phase II and on stable renin-angiotensin system blocking therapy were divided into those remaining untreated with a PPI (group 1, n = 686), on PPI therapy throughout (group 2, n = 174), and commencing (group 3, n = 109) or discontinuing regular PPI therapy (group 4, n = 67) during the 2 years between assessments. MAIN OUTCOME MEASURES Changes (Δ) in urinary albumin/creatinine ratio (uACR), estimated glomerular filtration rate (eGFR), and predicted 5-year CVD risk. RESULTS There were no statistically significant differences in ΔuACR between groups [analysis of variance (ANOVA), P = 0.36], but ΔeGFR was different (ANOVA, P = 0.002), with group 3 exhibiting a greater reduction than group 1 [adjusted mean difference (95% confidence interval), -2.7 (-4.5 to -0.8) mL/min/1.73 m2; P = 0.005]. The Δ5-year CVD risk showed a similar pattern (ANOVA, P < 0.001), with group 3 having a greater increase than group 1 [adjusted mean difference (95% confidence interval), 1.7% (0.6% to 2.8%); P = 0.002]. CONCLUSIONS Although PPI use was not associated with a sustained adverse effect on uACR, the association between PPI initiation and both worsening nephropathy and increasing 5-year CVD risk has potential clinical implications in type 2 diabetes.
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Affiliation(s)
- Timothy M E Davis
- School of Medicine and Pharmacology, Fremantle Hospital, Fremantle, Western Australia 6959, Australia
| | - Jocelyn Drinkwater
- School of Medicine and Pharmacology, Fremantle Hospital, Fremantle, Western Australia 6959, Australia
| | - Wendy A Davis
- School of Medicine and Pharmacology, Fremantle Hospital, Fremantle, Western Australia 6959, Australia
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Sutherland GT, Lim J, Srikanth V, Bruce DG. Epidemiological Approaches to Understanding the Link Between Type 2 Diabetes and Dementia. J Alzheimers Dis 2017; 59:393-403. [DOI: 10.3233/jad-161194] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Greg T. Sutherland
- Discipline of Pathology, Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - Julia Lim
- Discipline of Pathology, Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - Velandai Srikanth
- Medicine, Peninsula Clinical School, Central Clinical School, Frankston Hospital, Peninsula Health, Melbourne, VIC, Australia
| | - David G. Bruce
- School of Medicine & Pharmacology, University of Western Australia, Crawley, WA, Australia
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25
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Gauci R, Hunter M, Bruce DG, Davis WA, Davis TME. Anemia complicating type 2 diabetes: Prevalence, risk factors and prognosis. J Diabetes Complications 2017; 31:1169-1174. [PMID: 28433448 DOI: 10.1016/j.jdiacomp.2017.04.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 03/15/2017] [Accepted: 04/03/2017] [Indexed: 12/19/2022]
Abstract
AIMS To determine the prevalence, risk factors and prognosis of anemia in representative community-based patients with type 2 diabetes. METHODS Data from the Fremantle Diabetes Study Phase II (FDS2; n=1551, mean age 65.7years, 51.9% males) and Busselton Diabetes Study (BDS; n=186, mean age 70.2years, 50.0% males) cohorts, and from 186 matched BDS participants without diabetes, were analyzed. The prevalence of anemia (hemoglobin ≤130g/L males, ≤120g/L females) was determined in each sample. In FDS2, associates of anemia were assessed using multiple logistic regression and Cox proportional hazards modeling identified predictors of death during 4.3±1.2years post-recruitment. RESULTS The prevalence of anemia at baseline was 11.5% in FDS2 participants, 17.8% in BDS type 2 patients and 5.4% in BDS participants without diabetes. In FDS2, 163 of 178 patients with anemia (91.6%) had at least one other risk factor (serum vitamin B12<140pmol/L, serum ferritin <30μg/L and/or transferrin saturation<20%, serum testosterone <10nmol/L (males), glitazone therapy, estimated glomerular filtration rate (eGFR) <60mL/min 1.73m2, malignancy, hemoglobinopathy). More anemic than non-anemic FDS2 patients died (28.7% versus 8.0%; P<0.001). After adjustment for other independent predictors (age as time-scale, male sex, Aboriginality, marital status, smoking, eGFR), anemia was associated with a 57% increase in mortality (P=0.015). CONCLUSIONS Type 2 diabetes at least doubles the risk of anemia but other mostly modifiable risk factors are usually present. Anemia is associated with an increased risk of death after adjustment for other predictors.
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Affiliation(s)
- Richard Gauci
- Department of Endocrinology and Diabetes, Fiona Stanley and Fremantle Hospitals, Murdoch and Fremantle, Western Australia, Australia
| | - Michael Hunter
- Busselton Population Medical Research Institute, Busselton, Western Australia, Australia; School of Population Health, University of Western Australia, Nedlands, Australia
| | - David G Bruce
- School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia
| | - Wendy A Davis
- School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia
| | - Timothy M E Davis
- School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia.
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Barr ELM, Cunningham J, Tatipata S, Dunbar T, Kangaharan N, Guthridge S, Li SQ, Condon JR, Shaw JE, O'Dea K, Maple-Brown LJ. Associations of mortality and cardiovascular disease risks with diabetes and albuminuria in urban Indigenous Australians: the DRUID follow-up study. Diabet Med 2017; 34:946-957. [PMID: 28375555 DOI: 10.1111/dme.13360] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/28/2017] [Indexed: 12/01/2022]
Abstract
AIM To assess the relationships of diabetes and albuminuria with all-cause mortality and cardiovascular disease outcomes in a population without prior cardiovascular disease using data from the Darwin Region Urban Indigenous Diabetes (DRUID) study. METHODS We conducted a prospective cohort study of 706 participants (aged 15-81 years, 68% women) without prior cardiovascular disease who underwent a 75-g oral glucose tolerance test. Deaths and fatal or non-fatal cardiovascular disease were determined over 7 years, and hazard ratios with 95% CIs and population attributable risks were estimated for baseline glycaemia and albuminuria. RESULTS Compared with normoglycaemia and after adjustment for age, sex, hypertension, dyslipidaemia and smoking, known diabetes was associated with an adjusted hazard ratio of 4.8 (95% CI 1.5-14.7) for all-cause mortality and 5.6 (95% CI 2.1-15.2) for cardiovascular disease. Compared with normoalbuminuria, the respective adjusted risks for macroalbuminuria were 10.9 (95% CI 3.7-32.1) and 3.9 (95% CI 1.4-10.8). The Adjusted all-cause mortality and cardiovascular disease estimated population attributable risks for diabetes were 27% and 32%, and for albuminuria they were 32% and 21%, respectively. CONCLUSIONS In our study population, the burden of mortality and cardiovascular disease was largely driven by diabetes and albuminuria. This finding on the influence of diabetes and albuminuria is consistent with reports in other high-risk Indigenous populations and should be better reflected in risk scores and intervention programmes.
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Affiliation(s)
- E L M Barr
- Menzies School of Health Research, Darwin, Australia
- Baker Heart and Diabetes Institute, Melbourne, Australia
| | - J Cunningham
- Menzies School of Health Research, Darwin, Australia
| | - S Tatipata
- Menzies School of Health Research, Darwin, Australia
| | - T Dunbar
- Charles Darwin University, Darwin, Australia
| | | | - S Guthridge
- Menzies School of Health Research, Darwin, Australia
- Health Gains Planning, Northern Territory Department of Health, Darwin, Australia
| | - S Q Li
- Health Gains Planning, Northern Territory Department of Health, Darwin, Australia
| | - J R Condon
- Menzies School of Health Research, Darwin, Australia
| | - J E Shaw
- Baker Heart and Diabetes Institute, Melbourne, Australia
| | - K O'Dea
- University of South Australia, Adelaide, Australia
- University of Melbourne, Melbourne, Australia
| | - L J Maple-Brown
- Menzies School of Health Research, Darwin, Australia
- Royal Darwin Hospital, Darwin, Australia
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27
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Delaney G, Newlyn N, Pamplona E, Hocking SL, Glastras SJ, McGrath RT, Fulcher GR. Identification of Patients With Diabetes Who Benefit Most From a Health Coaching Program in Chronic Disease Management, Sydney, Australia, 2013. Prev Chronic Dis 2017; 14:E21. [PMID: 28253473 PMCID: PMC5338599 DOI: 10.5888/pcd14.160504] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Introduction Chronic disease management programs (CDMPs) that include health coaching can facilitate and coordinate diabetes management. The aim of this study was to assess changes in patients’ general knowledge of diabetes, self-reported health status, diabetes distress, body mass index (BMI), and glycemic control after enrollment in a face-to-face CDMP group health coaching session (with telephone follow-up) compared with participation in telephone-only health coaching, during a 12-month period. Methods Patients with diabetes were enrolled in a health coaching program at Royal North Shore Hospital, Sydney, Australia, in 2013. Questionnaires were administered at baseline and at 3, 6, and 12 months, and the results were compared with baseline. Glycemic control, measured with glycated hemoglobin A1c (HbA1c) and BMI, were measured at baseline and 12 months. Results Overall, 238 patients attended a face-to-face CDMP session with telephone follow-up (n = 178) or participated in telephone-only health coaching (n = 60). We found no change in BMI in either group; however, HbA1c levels in patients with baseline above the current recommended target (>7%) decreased significantly from 8.5% (standard deviation [SD], 1.0%) to 7.9% (SD, 1.0%) (P = .03). Patients with the lowest self-reported health status at baseline improved from 4.4 (SD, 0.5) to 3.7 (SD, 0.9) (P = .001). Diabetes knowledge improved in all patients (24.4 [SD, 2.4] to 25.2 [SD, 2.4]; P < .001), and diabetes distress decreased among those with the highest levels of distress at baseline (3.0 [SD, 0.4] vs 3.8 [SD, 0.6]; P = .003). Conclusion Diabetes health coaching programs can improve glycemic control and reduce diabetes distress in patients with high levels of these at baseline.
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Affiliation(s)
- Grace Delaney
- Department of Diabetes, Endocrinology & Metabolism, Royal North Shore Hospital, St Leonards, Sydney, NSW 2065, Australia
| | - Neroli Newlyn
- Department of Diabetes, Endocrinology & Metabolism, Royal North Shore Hospital, St Leonards, Sydney, NSW 2065, Australia
| | - Elline Pamplona
- Department of Diabetes, Endocrinology & Metabolism, Royal North Shore Hospital, St Leonards, Sydney, NSW 2065, Australia
| | - Samantha L Hocking
- Department of Diabetes, Endocrinology & Metabolism, Royal North Shore Hospital, St Leonards, Sydney, NSW 2065, Australia.,University of Sydney, Northern Clinical School, Royal North Shore Hospital, St Leonards, NSW 2065, Australia.,Charles Perkins Centre, University of Sydney, Australia
| | - Sarah J Glastras
- Department of Diabetes, Endocrinology & Metabolism, Royal North Shore Hospital, St Leonards, Sydney, NSW 2065, Australia.,Kolling Institute of Medical Research, University of Sydney, Royal North Shore Hospital, St Leonards, NSW 2065, Australia
| | - Rachel T McGrath
- Department of Diabetes, Endocrinology & Metabolism, Royal North Shore Hospital, St Leonards, Sydney, NSW 2065, Australia.,University of Sydney, Northern Clinical School, Royal North Shore Hospital, St Leonards, NSW 2065, Australia.,Kolling Institute of Medical Research, University of Sydney, Royal North Shore Hospital, St Leonards, NSW 2065, Australia
| | - Gregory R Fulcher
- Department of Diabetes, Endocrinology & Metabolism, Royal North Shore Hospital, St Leonards, Sydney, NSW 2065, Australia.,University of Sydney, Northern Clinical School, Royal North Shore Hospital, St Leonards, NSW 2065, Australia
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28
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Davis WA, Zilkens RR, Starkstein SE, Davis TME, Bruce DG. Dementia onset, incidence and risk in type 2 diabetes: a matched cohort study with the Fremantle Diabetes Study Phase I. Diabetologia 2017; 60:89-97. [PMID: 27717960 DOI: 10.1007/s00125-016-4127-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 09/19/2016] [Indexed: 10/20/2022]
Abstract
AIMS/HYPOTHESIS The study aimed to assess the incidence, age of onset, survival and relative hazard of dementia in well-categorised community-based patients with type 2 diabetes compared with a matched cohort of individuals without diabetes. METHODS A longitudinal observational study was undertaken involving 1291 participants with type 2 diabetes from the Fremantle Diabetes Study and 5159 matched residents without documented diabetes. Linkage with health-related databases was used to detect incident dementia. Relative hazards were assessed using both cause-specific and subdistribution proportional hazards models. RESULTS During 13.8 ± 5.8 years of follow-up, incident dementia occurred in 13.9% and 12.4% of the groups of participants with and without diabetes, respectively (p = 0.15). With type 2 diabetes, the incidence of dementia was higher (incidence rate ratio [IRR] 1.28, 95% CI 1.08, 1.51), as was the competing risk of death (IRR 1.50, 95% CI 1.38, 1.64). The ages when dementia was first recorded and when death with dementia occurred were both earlier with diabetes, by 1.7 (95% CI 0.6, 2.9) and 2.3 (95% CI 1.1, 3.6) years, respectively (both p ≤ 0.004). Type 2 diabetes was associated with an adjusted subdistribution HR of 1.18 (95% CI 1.00, 1.39), and a cause-specific HR of 1.51 (95% CI 1.27, 1.78) for all-cause dementia. CONCLUSIONS/INTERPRETATION Type 2 diabetes is associated with an increased incidence of dementia, and dementia onset occurs at a younger age. The relative hazards of both dementia and premature mortality are increased and, as a consequence, the increased risk of dementia in type 2 diabetes is not as marked as suggested by cause-specific HRs.
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Affiliation(s)
- Wendy A Davis
- School of Medicine and Pharmacology, The University of Western Australia, PO Box 480, Fremantle, WA, 6959, Australia
| | - Renate R Zilkens
- Centre for Population Health Research, School of Public Health, Curtin University of Technology, Perth, WA, Australia
| | - Sergio E Starkstein
- School of Psychiatry and Clinical Neurosciences, The University of Western Australia, Fremantle Hospital, Fremantle, WA, Australia
| | - Timothy M E Davis
- School of Medicine and Pharmacology, The University of Western Australia, PO Box 480, Fremantle, WA, 6959, Australia
| | - David G Bruce
- School of Medicine and Pharmacology, The University of Western Australia, PO Box 480, Fremantle, WA, 6959, Australia.
- School of Medicine and Pharmacology, Fremantle Hospital, PO Box 480, Fremantle, Western Australia, 6959, Australia.
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29
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Davis TME, Badshah I, Chubb SAP, Davis WA. Dose-response relationship between statin therapy and glycaemia in community-based patients with type 2 diabetes: the Fremantle Diabetes Study. Diabetes Obes Metab 2016; 18:1143-1146. [PMID: 27334248 DOI: 10.1111/dom.12710] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 06/05/2016] [Accepted: 06/12/2016] [Indexed: 11/30/2022]
Abstract
Although statins may increase glycaemia in type 2 diabetes, available data are from single-dose intervention trials or studies with no adjustment for concomitant changes in blood glucose-lowering therapy. To provide real-life data covering common statin types and doses, glycated haemoglobin (HbA1c) data from patients in the Fremantle Diabetes Study phases I (FDS1) and II (FDS2) and data on stable diabetes treatment before and after statin initiation were analysed. Intensity of statin therapy was categorized as low, moderate or high based on within-group dose regimens with similar serum LDL cholesterol-lowering effects. In pooled analyses of 335 eligible patients in FDS1 and FDS2, there was no change in HbA1c in the low-intensity group (0.04% or 0.4 mmol/mol; n = 159; p = .40), but a mean 0.22% (2.4 mmol/mol) increase in the moderate-intensity group (n = 185; p = .022) and a larger mean increase of 1.05% (11.5 mmol/mol) increase in the high-intensity group (n = 11; p = .023). These real-life data suggest a dose-response relationship between statin treatment intensity and glycaemia that has potential clinical implications.
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Affiliation(s)
- T M E Davis
- School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, Fremantle, Australia.
| | - I Badshah
- Department of Endocrinology, Fiona Stanley Hospital, Murdoch, Australia
| | - S A P Chubb
- School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, Fremantle, Australia
- Department of Clinical Biochemistry, PathWest Laboratory Medicine WA, Royal Perth Hospital, Perth, Australia
- School of Pathology and Laboratory Medicine, University of Western Australia, Nedlands, Australia
- Department of Clinical Biochemistry, PathWest Laboratory Medicine WA, Fiona Stanley Hospital, Murdoch, Australia
| | - W A Davis
- School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, Fremantle, Australia
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30
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Davis TME, Chubb SAP, Bruce DG, Davis WA. Metabolic memory and all-cause death in community-based patients with type 2 diabetes: the Fremantle Diabetes Study. Diabetes Obes Metab 2016; 18:598-606. [PMID: 26936654 DOI: 10.1111/dom.12655] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 01/12/2016] [Accepted: 02/28/2016] [Indexed: 12/18/2022]
Abstract
AIMS To validate the findings, in a usual care setting, of glycaemic intervention trials, which have shown that tight control in patients with recently diagnosed type 2 diabetes protects against death during post-study monitoring, but that it may be deleterious in long-duration diabetes with vascular complications. METHODS A subset of 531 patients with type 2 diabetes from the community-based observational Fremantle Diabetes Study Phase 1, who attended ≥5 annual reviews (mean follow-up 15.9 years), were categorized by baseline diabetes duration [<1 year (Group 1); 1 to <5 years (Group 2); and ≥5 years (Group 3)]. Glycated haemoglobin (HbA1c) trajectories over the first 5 years were determined [low, medium and high; equivalent to mean HbA1c ≤6.6% (<49 mmol/mol), 6.7-8.0% (50-64 mmol/mol) and ≥8.0% (>64 mmol/mol), respectively]. Kaplan-Meier analysis was used to assess survival by duration and HbA1c trajectory. Cox proportional hazards modelling identified predictors of all-cause death. RESULTS There was greater mortality in patients with a medium versus those with a low trajectory in Group 1: hazard ratio (HR) 1.99 [95% confidence interval (CI) 1.003-3.94; p = 0.049], and in patients with a high versus a low trajectory in Group 2: HR 2.02 (95% CI 1.11-3.71; p = 0.022). In Group 3, both medium [HR 0.57 (95% CI 0.35-0.92; p = 0.022)] and high [HR 0.56 (95% CI 0.32-0.96); p = 0.035] trajectories were independently and inversely associated with death. CONCLUSIONS In community-based patients with newly or recently diagnosed type 2 diabetes, poor glycaemic control was an adverse prognostic indicator. Tight control was independently associated with death in patients with diabetes duration ≥5 years. These data parallel intervention trial findings and support individualization of HbA1c targets.
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Affiliation(s)
- T M E Davis
- School of Medicine and Pharmacology, Fremantle Hospital, Fremantle, Western Australia, Australia
| | - S A P Chubb
- School of Medicine and Pharmacology, Fremantle Hospital, Fremantle, Western Australia, Australia
- Department of Clinical Biochemistry, PathWest Laboratory Medicine WA, Royal Perth Hospital, Perth, Western Australia, Australia
- School of Pathology and Laboratory Medicine, University of Western Australia, Nedlands, Western Australia, Australia
- Department of Clinical Biochemistry, PathWest Laboratory Medicine WA, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
| | - D G Bruce
- School of Medicine and Pharmacology, Fremantle Hospital, Fremantle, Western Australia, Australia
| | - W A Davis
- School of Medicine and Pharmacology, Fremantle Hospital, Fremantle, Western Australia, Australia
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Vasant BR, Matthews V, Burgess CP, Connors CM, Bailie RS. Wide Variation in Absolute Cardiovascular Risk Assessment in Aboriginal and Torres Strait Islander People with Type 2 Diabetes. Front Public Health 2016; 4:37. [PMID: 27014674 PMCID: PMC4781864 DOI: 10.3389/fpubh.2016.00037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 02/22/2016] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND Absolute cardiovascular risk assessment (CVRA) is based on the combined effects of multiple risk factors and can identify asymptomatic individuals at high risk of cardiovascular disease (CVD). Aboriginal and Torres Strait Islander people, the Indigenous people of Australia, are disproportionately affected by CVD and diabetes. Our study aimed to investigate variations in the use of absolute CVRA in patients with diabetes at Indigenous community healthcare centers and to identify patient and health center characteristics that may contribute to this variation. METHODS Audits of clinical records of 1,728 patients with a known diagnosis of diabetes across 121 health centers in four Australian States/Territories [Northern Territory (NT), South Australia, Western Australia, and Queensland] over the period 2012-2014 were conducted as part of a large-scale continuous quality improvement program. Multilevel regression modeling was used to quantify variation in recording of CVRA attributable to health center and patient characteristics. RESULTS The proportion of eligible patients with documented CVRA was 33% (n = 574/1,728). The majority (95%) of assessments were conducted in the NT. Multilevel regression analysis showed health center characteristics accounted for 70% of the variation in assessments in the NT. Government-operated health centers had 18.8 times the odds (95% CI 7.7-46.2) of recording CVRA delivery compared with other health centers. CONCLUSION Health centers in the NT delivered the majority of absolute CVRA to Indigenous patients with diabetes in our study. Health systems factors that may have facilitated provision of CVRA in the NT include decision support tools and a reporting process for CVRA delivery. Implementation of similar systems in other jurisdictions may help improve CVRA delivery. Early identification and treatment of high risk individuals through wider use of CVRA may help reduce the burden of CVD in Indigenous Australians with diabetes.
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Affiliation(s)
- Bhakti R. Vasant
- Menzies School of Health Research (Brisbane Office), Brisbane, QLD, Australia
| | - Veronica Matthews
- Menzies School of Health Research (Brisbane Office), Brisbane, QLD, Australia
| | - Christopher P. Burgess
- Top End Health Services, Primary Health Care Branch, Northern Territory Government, Casuarina, NT, Australia
| | - Christine M. Connors
- Top End Health Services, Primary Health Care Branch, Northern Territory Government, Casuarina, NT, Australia
| | - Ross S. Bailie
- Menzies School of Health Research (Brisbane Office), Brisbane, QLD, Australia
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Tan EDD, Davis WA, Davis TME. Changes in characteristics and management of Asian and Anglo-Celts with type 2 diabetes over a 15-year period in an urban Australian community: The Fremantle Diabetes Study. J Diabetes 2016; 8:139-47. [PMID: 25581285 DOI: 10.1111/1753-0407.12267] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 12/29/2014] [Accepted: 01/04/2015] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The aim of the present study was to determine temporal changes in characteristics and management of Asians with type 2 diabetes (T2D) compared with those of the majority Anglo-Celt (AC) patients in an urban Australian community. METHODS Cross-sectional data from the observational Fremantle Diabetes Study (FDS) collected in 1993-96 (Phase I; FDS1) and 2008-11 (Phase II; FDS2) were analyzed for patients classified as Asian (n = 44 and 65 in FDS1 and FDS2, respectively) or AC (n = 796 and 793, respectively). Between-group differences in changes in key variables between FDS phases were analyzed by generalized linear modeling with adjustment for age and gender. RESULTS Asians patients were significantly younger at diagnosis and recruitment and had a lower body mass index and smaller waist circumference than the AC participants in both FDS phases. They were also less likely to be treated for hypertension. Cardiovascular risk factors and their management and macrovascular complications were similar in the two groups over time. A greater propensity to retinopathy with Asian ethnicity in FDS1 (27.3% vs 13.5%; P = 0.23) was attenuated in FDS2 (23.7% vs 19.0%; P = 0.39). Asians had a significantly lower prevalence of peripheral sensory neuropathy in FDS2 (33.8% vs 63.3%; P < 0.001; adjusted P = 0.011 for between-group temporal change). CONCLUSIONS There were persistent differences between the phenotypic features of Asian migrants with T2D versus AC patients in an Australian urban community over 15 years of follow-up, but management of diabetes and non-glycemic risk factors remained comparable. Ethnicity-specific differences in susceptibility to microvascular complications should be considered in clinical management.
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Affiliation(s)
- Eva D D Tan
- School of Medicine and Pharmacology, Fremantle Hospital, University of Western Australia, Fremantle, Western Australia, Australia
| | - Wendy A Davis
- School of Medicine and Pharmacology, Fremantle Hospital, University of Western Australia, Fremantle, Western Australia, Australia
| | - Timothy M E Davis
- School of Medicine and Pharmacology, Fremantle Hospital, University of Western Australia, Fremantle, Western Australia, Australia
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Baba M, Davis WA, Norman PE, Davis TME. Temporal changes in the prevalence and associates of diabetes-related lower extremity amputations in patients with type 2 diabetes: the Fremantle Diabetes Study. Cardiovasc Diabetol 2015; 14:152. [PMID: 26684912 PMCID: PMC4683723 DOI: 10.1186/s12933-015-0315-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 12/04/2015] [Indexed: 12/14/2022] Open
Abstract
Background
To determine temporal changes in the prevalence and associates of lower extremity amputation (LEA) complicating type 2 diabetes. Methods Baseline data from the longitudinal observational Fremantle Diabetes Study (FDS) relating to LEA and its risk factors collected from 1296 patients recruited to FDS Phase 1 (FDS1) from 1993 to 1996 and from 1509 patients recruited to FDS Phase 2 (FDS2) from 2008 to 2011 were analysed. Multiple logistic regression was used to determine associates of prevalent LEA in individual and pooled phases. Generalised linear modelling was used to examine whether diabetes related LEA prevalence and its associates had changed between Phases. Results There were 15 diabetes-related LEAs at baseline in FDS1 (1.2 %) and 15 in FDS2 (1.0 %; P = 0.22 after age, sex and race/ethnicity adjustment). In multivariable analysis, independent associates of a baseline LEA in FDS1 were a history of vascular bypass surgery or revascularisation, urinary albumin:creatinine ratio, peripheral sensory neuropathy and cerebrovascular disease (P ≤ 0.035). In FDS2, prevalent LEA was independently associated with a history of vascular bypass surgery or revascularisation, past hospitalisation for/current foot ulcer and fasting serum glucose (P ≤ 0.001). In pooled analyses, a history of vascular bypass or revascularisation, past hospitalisation for/current foot ulcer at baseline, urinary albumin:creatinine ratio (P < 0.001), as well as FDS Phase as a binary variable [odds ratio (95 % confidence interval): 0.28 (0.09–0.84) for FDS2 vs FDS1, P = 0.023] were associated with a lower risk of LEA at study entry. Conclusions The risk of prevalent LEA in two cohorts of patients with type 2 diabetes from the same Australian community fell by 72 % over a 15-year period after adjustment for important between-group differences in diabetes-related and other variables. This improvement reflects primary care foot health-related initiatives introduced between Phases, and should have important individual and societal benefits against a background of a progressively increasing diabetes burden.
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Affiliation(s)
- Mendel Baba
- School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, PO Box 480, Fremantle, WA, 6959, Australia. .,Podiatric Medicine Unit, University of Western Australia, Crawley, Perth, WA, Australia.
| | - Wendy A Davis
- School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, PO Box 480, Fremantle, WA, 6959, Australia.
| | - Paul E Norman
- School of Surgery, University of Western Australia, Fremantle Hospital, Fremantle, WA, Australia.
| | - Timothy M E Davis
- School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, PO Box 480, Fremantle, WA, 6959, Australia.
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Davis WA, Starkstein SE, Bruce DG, Davis TME. The interactive effects of type 2 diabetes mellitus and schizophrenia on all-cause mortality: The Fremantle Diabetes Study. J Diabetes Complications 2015; 29:1320-2. [PMID: 26387807 DOI: 10.1016/j.jdiacomp.2015.08.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 08/24/2015] [Accepted: 08/24/2015] [Indexed: 11/25/2022]
Abstract
In a study of the effects of type 2 diabetes and schizophrenia on mortality in 1296 community-based diabetic patients followed for a mean±SD 12.9±6.1years and in 5159 matched non-diabetic residents, 0.4% of each group had schizophrenia. Patients with both conditions had a six-fold adjusted increased risk of death.
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Affiliation(s)
- Wendy Angela Davis
- School of Medicine and Pharmacology, the University of Western Australia, Fremantle Hospital, Western Australia.
| | - Sergio E Starkstein
- School of Psychiatry and Clinical Neurosciences, the University of Western Australia, Fremantle Hospital, Western Australia
| | - David G Bruce
- School of Medicine and Pharmacology, the University of Western Australia, Fremantle Hospital, Western Australia
| | - Timothy M E Davis
- School of Medicine and Pharmacology, the University of Western Australia, Fremantle Hospital, Western Australia
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Johnson DR, McDermott RA, Clifton PM, D'Onise K, Taylor SM, Preece CL, Schmidt BA. Characteristics of Indigenous adults with poorly controlled diabetes in north Queensland: implications for services. BMC Public Health 2015; 15:325. [PMID: 25884441 PMCID: PMC4405873 DOI: 10.1186/s12889-015-1660-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2014] [Accepted: 03/19/2015] [Indexed: 01/15/2023] Open
Abstract
Background Indigenous Australian adults with diabetes continue to have suboptimal clinical control and poorer outcomes compared with non-Indigenous people although there is a paucity of data documenting the detailed health status of Indigenous people in Australia. To further investigate the characteristics of Indigenous Australian adults with poorly controlled diabetes we analysed baseline data from a cluster randomized trial aiming to deliver a program of integrated community-based intensive chronic disease management for Indigenous people in remote communities in far north Queensland, Australia. Methods Indigenous adults aged 18 to 65 years from 12 clinics in rural north Queensland with established type 2 diabetes and with HbA1c ≥8.5% were invited to participate. The primary outcome variable measured at baseline was HbA1c. Other variables measured included socio-demographic indicators, health literacy, BMI, blood pressure, lipids, renal function, smoking status and quality of life measures. Data were collected between December 2010 and July 2011. Analysis was performed by ethnicity – Aboriginal or Torres Strait Islander. Results One hundred and ninety three participants were included in the analysis. Very high rates of albuminuria, high rates of smoking, dyslipidaemia, hypertension and elevated BMI were recorded. Aboriginal participants reported higher levels of socio-economic disadvantage, higher smoking rates, lower BMI and worse self-reported health status than Torres Strait Islander participants. Conclusion These results demonstrate a high potential for improved culturally sound community-based management of diabetes and other comorbid conditions in this very high risk population. They also provide further evidence for including albuminuria in cardiovascular risk calculation.
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Affiliation(s)
- David Ross Johnson
- Aboriginal Health Council of South Australia, 9 King William Road, Adelaide, SA, 5061, Australia.
| | - Robyn Anne McDermott
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Cairns, Australia.
| | - Peter Marshall Clifton
- School of Pharmacy and Medical Sciences, University of South Australia, Baker IDI Heart and Diabetes Institute, Adelaide, Australia.
| | - Katina D'Onise
- School of Population Health, University of South Australia, Adelaide, Australia. Katina.D'
| | - Sean Matthew Taylor
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Cairns, Australia.
| | - Cilla Louise Preece
- School of Population Health, University of South Australia, Adelaide, Australia.
| | - Barbara Anne Schmidt
- College of Public Health, Medical and Veterinary Sciences, James Cook University, Cairns, Australia. .,School of Population Health, University of South Australia, Adelaide, Australia.
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Baba M, Davis WA, Norman PE, Davis TME. Temporal changes in the prevalence and associates of foot ulceration in type 2 diabetes: the Fremantle Diabetes Study. J Diabetes Complications 2015; 29:356-61. [PMID: 25670409 DOI: 10.1016/j.jdiacomp.2015.01.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 12/20/2014] [Accepted: 01/13/2015] [Indexed: 11/21/2022]
Abstract
AIMS To assess temporal changes in foot ulceration and its risk factors in community-based people with type 2 diabetes. METHODS Baseline data from the longitudinal observational Fremantle Diabetes Study collected from 1993 to 1996 (Phase I) and 2008 to 2011 (Phase II) were analyzed. Generalized linear modeling was used to examine changes in foot ulcer prevalence and its associates between phases. Multiple logistic regression was used to determine associates of prevalent foot ulceration in individual and pooled phases. RESULTS There were 16 foot ulcers among 1296 patients in Phase I (1.2%) and 23 in 1509 Phase II patients (1.5%; P=0.86 after age, sex and race/ethnicity adjustment). Glycemic and non-glycemic cardiovascular risk factors were better in Phase II, but diabetes duration was longer, peripheral sensory neuropathy (PSN) was more prevalent and more patients were Aboriginal (P<0.001) than in Phase I. In multivariable analysis of both phases and pooled data, diabetes duration and peripheral sensory neuropathy (PSN) were independent associates of foot ulceration (P≤0.026). Prior hospitalization for ulcer, intermittent claudication, any absent pedal pulse and Aboriginality were also significant in the pooled model (P≤0.009). CONCLUSIONS Strong associations between foot ulcer and diabetes duration, PSN, symptomatic and clinically-detectable peripheral vascular disease were observed. Aboriginality also proved an independent risk factor. Since all these risk factors apart from intermittent claudication and impalpable foot pulses were more prevalent in Phase II, improved community- and hospital-based foot care between phases are likely to have attenuated the risk of foot ulcers in Phase II patients.
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Affiliation(s)
- Mendel Baba
- School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia; Podiatric Medicine Unit, University of Western Australia, Crawley, Perth, Western Australia, Australia
| | - Wendy A Davis
- School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia
| | - Paul E Norman
- School of Surgery, University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia
| | - Timothy M E Davis
- School of Medicine and Pharmacology, University of Western Australia, Fremantle Hospital, Fremantle, Western Australia, Australia.
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Paddison CAM, Saunders CL, Abel GA, Payne RA, Adler AI, Graffy JP, Roland MO. How do people with diabetes describe their experiences in primary care? Evidence from 85,760 patients with self-reported diabetes from the English General Practice Patient Survey. Diabetes Care 2015; 38:469-75. [PMID: 25271208 DOI: 10.2337/dc14-1095] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Developing primary care is an important current health policy goal in the U.S. and England. Information on patients' experience can help to improve the care of people with diabetes. We describe the experiences of people with diabetes in primary care and examine how these experiences vary with increasing comorbidity. RESEARCH DESIGN AND METHODS Using data from 906,578 responders to the 2012 General Practice Patient Survey (England), including 85,760 with self-reported diabetes, we used logistic regressions controlling for age, sex, ethnicity, and socioeconomic status to analyze patient experience using seven items covering three domains of primary care: access, continuity, and communication. RESULTS People with diabetes were significantly more likely to report better experience on six out of seven primary care items than people without diabetes after adjusting for age, sex, ethnicity, and socioeconomic status (adjusted differences 0.88-3.20%; odds ratios [ORs] 1.07-1.18; P < 0.001). Those with diabetes and additional comorbid long-term conditions were more likely to report worse experiences, particularly for access to primary care appointments (patients with diabetes alone compared with patients without diabetes: OR 1.22 [95% CI 1.17-1.28] and patients with diabetes plus three or more conditions compared with patients without diabetes: OR 0.87 [95% CI 0.83-0.91]). CONCLUSIONS People with diabetes in England report primary care experiences that are at least as good as those without diabetes for most domains of care. However, improvements in primary care are needed for diabetes patients with comorbid long-term conditions, including better access to appointments and improved communication.
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Affiliation(s)
- Charlotte A M Paddison
- Cambridge Centre for Health Services Research, Institute of Public Health, University of Cambridge, Cambridge, U.K.
| | - Catherine L Saunders
- Cambridge Centre for Health Services Research, Institute of Public Health, University of Cambridge, Cambridge, U.K
| | - Gary A Abel
- Cambridge Centre for Health Services Research, Institute of Public Health, University of Cambridge, Cambridge, U.K
| | - Rupert A Payne
- Cambridge Centre for Health Services Research, Institute of Public Health, University of Cambridge, Cambridge, U.K
| | - Amanda I Adler
- Wolfson Diabetes and Endocrine Clinic, Addenbrooke's Hospital, Institute of Metabolic Science, Cambridge, U.K
| | - Jonathan P Graffy
- Primary Care Unit, Institute of Public Health, University of Cambridge, Cambridge, U.K
| | - Martin O Roland
- Cambridge Centre for Health Services Research, Institute of Public Health, University of Cambridge, Cambridge, U.K
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Davis TME, Hunt K, Bruce DG, Starkstein S, Skinner T, McAullay D, Davis WA. Prevalence of depression and its associations with cardio-metabolic control in Aboriginal and Anglo-Celt patients with type 2 diabetes: the Fremantle Diabetes Study Phase II. Diabetes Res Clin Pract 2015; 107:384-91. [PMID: 25656760 DOI: 10.1016/j.diabres.2014.12.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 10/14/2014] [Accepted: 12/26/2014] [Indexed: 01/23/2023]
Abstract
AIMS To determine the prevalence and associates of depression in Aboriginal and Anglo-Celt (AC) Australians with type 2 diabetes. METHODS Community-based patients were screened using the Patient Health Questionnaire (PHQ-9) as part of detailed assessment. The prevalence of any current depression, major depression and antidepressant use by racial group was compared after adjustment for age, sex, educational attainment and marital status. Multiple logistic regression was used to determine associates of current depression. RESULTS The 107 Aboriginal participants were younger (mean±SD 54.3±11.8 vs. 67.2±10.6 years), less often male (34.6% vs. 50.9%) and married (39.3% vs. 61.7%), and more likely to smoke (44.6% vs. 8.1%) than the 793 AC subjects (P≤0.002). Fifty-two Aboriginal (48.5%) and 772 AC participants (97.4%) completed the PHQ-9; these Aboriginals had similar socio-demographic, anthropometric and diabetes-related characteristics to those without PHQ-9 data. A quarter of the Aboriginals had current depression vs 10.6% of ACs (P=0.16), 15.4% vs. 4.1% had major depression (P=0.029), and 68.8% vs. 29.7% had untreated depression (P=0.032). Compared with non-depressed participants, patients with current depression were younger and more likely to smoke, to be overweight/obese and to have worse glycaemic control (P≤0.024). Significant independent associates of current depression were educational attainment (inversely), smoking status, body mass index and fasting plasma glucose in the AC group and alcohol use in the Aboriginal group. CONCLUSIONS Although prevalence of depression was not significantly increased in the Aboriginal patients, it was more likely to be major and untreated. Depression complicating type 2 diabetes is associated with adverse cardiovascular risk.
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Affiliation(s)
- Timothy M E Davis
- University of Western Australia, School of Medicine & Pharmacology, Fremantle Hospital, Fremantle, Western Australia, Australia.
| | - Kerry Hunt
- University of Western Australia, School of Medicine & Pharmacology, Fremantle Hospital, Fremantle, Western Australia, Australia
| | - David G Bruce
- University of Western Australia, School of Medicine & Pharmacology, Fremantle Hospital, Fremantle, Western Australia, Australia
| | - Sergio Starkstein
- University of Western Australia, School of Psychiatry and Clinical Neurosciences, Fremantle Hospital, Fremantle, Western Australia, Australia
| | - Timothy Skinner
- Charles Darwin University, School of Psychological and Clinical Sciences, Casuarina, Northern Territory, Australia
| | - Daniel McAullay
- Edith Cowan University, Kurongkurl Katitjin Centre for Indigenous Australian Education and Research, Mt Lawley, Western Australia, Australia; Australian National University, Australian Primary Health Care Research Institute, Canberra, Australian Capital Territory, Australia
| | - Wendy A Davis
- University of Western Australia, School of Medicine & Pharmacology, Fremantle Hospital, Fremantle, Western Australia, Australia
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Davis TME, Davis WA, McAullay D. Re: Essential service standards for equitable national cardiovascular care for Aboriginal and Torres Strait Islander people. Heart Lung Circ 2015; 24:626. [PMID: 25666999 DOI: 10.1016/j.hlc.2015.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 01/08/2015] [Indexed: 10/24/2022]
Affiliation(s)
- Timothy M E Davis
- University of Western Australia, School of Medicine and Pharmacology, Fremantle Hospital, Fremantle, Australia
| | - Wendy A Davis
- University of Western Australia, School of Medicine and Pharmacology, Fremantle Hospital, Fremantle, Australia
| | - Daniel McAullay
- Edith Cowan University, Kurongkurl Katitjin Centre for Indigenous Australian Education and Research, Mt Lawley, Western Australia, Australia and Australian National University, Australian Primary Health Care Research Institute, Canberra, Australian Capital Territory, Australia
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Disparities in healthcare utilisation rates for Aboriginal and non-Aboriginal Albertan residents, 1997-2006: a population database study. PLoS One 2012; 7:e48355. [PMID: 23152770 PMCID: PMC3495946 DOI: 10.1371/journal.pone.0048355] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Accepted: 09/24/2012] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND It is widely recognised that significant discrepancies exist between the health of indigenous and non-indigenous populations. Whilst the reasons are incompletely defined, one potential cause is that indigenous communities do not access healthcare to the same extent. We investigated healthcare utilisation rates in the Canadian Aboriginal population to elucidate the contribution of this fundamental social determinant for health to such disparities. METHODS Healthcare utilisation data over a nine-year period were analysed for a cohort of nearly two million individuals to determine the rates at which Aboriginal and non-Aboriginal populations utilised two specialties (Cardiology and Ophthalmology) in Alberta, Canada. Unadjusted and adjusted healthcare utilisation rates obtained by mixed linear and Poisson regressions, respectively, were compared amongst three population groups - federally registered Aboriginals, individuals receiving welfare, and other Albertans. RESULTS Healthcare utilisation rates for Aboriginals were substantially lower than those of non-Aboriginals and welfare recipients at each time point and subspecialty studied [e.g. During 2005/06, unadjusted Cardiology utilisation rates were 0.28% (Aboriginal, n = 97,080), 0.93% (non-Aboriginal, n = 1,720,041) and 1.37% (Welfare, n = 52,514), p = <0.001]. The age distribution of the Aboriginal population was markedly different [2.7%≥65 years of age, non-Aboriginal 10.7%], and comparable utilisation rates were obtained after adjustment for fiscal year and estimated life expectancy [Cardiology: Incidence Rate Ratio 0.66, Ophthalmology: IRR 0.85]. DISCUSSION The analysis revealed that Aboriginal people utilised subspecialty healthcare at a consistently lower rate than either comparatively economically disadvantaged groups or the general population. Notably, the differences were relatively invariant between the major provincial centres and over a nine year period. Addressing the causes of these discrepancies is essential for reducing marked health disparities, and so improving the health of Aboriginal people.
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