The association between co-morbidity and the use of antidiabetics or adjunctive cardiovascular medicines in Australian veterans with diabetes

Zhang, Ying, Vitry, Agnes, Caughey, Gillian, Roughead, Elizabeth E., Ryan, Philip, Gilbert, Andrew, Shakib, Sepehr, and McDermott, Robyn (2011) The association between co-morbidity and the use of antidiabetics or adjunctive cardiovascular medicines in Australian veterans with diabetes. Diabetes Research and Clinical Practice, 91 (1). pp. 115-120.

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Abstract

Objective: To examine the association between co-morbidities and the use of antidiabetic medications or adjunctive cardiovascular medicines among Australian veterans with diabetes.

Methods: Data were sourced from the Australian Department of Veterans' Affairs Health Claims database. All veterans aged 65 years and over who were dispensed medicines for diabetes from July to December 2006 were included. Dispensings of antidiabetic and adjunctive cardiovascular medicines over the first six months of 2007 were examined. Log binominal regression models were used to calculate the relative risks of the dispensing of medications for various co-morbidities, taking into account potential confounders.

Results: Among the 14,802 veterans who were dispensed medicines for diabetes, 70% had five or more co-morbidities. Patients who had diabetes-related co-morbidities had significantly less dispensing of metformin monotherapy and more dispensing of insulin than those without these conditions. Patients who had cardiovascular disease were more likely to have three or more oral antidiabetics dispensed (RR = 1.16, 95% CI: 1.04-1.30), particularly those who had heart failure (RR = 1.24, 95% CI: 1.05-1.47). Patients with renal disease were more likely to have glitazones dispensed (RR = 1.46, 95% CI: 1.24-1.72). Adjunctive cardiovascular medicines were significantly less likely to be dispensed to those with established heart conditions and non-related co-morbidities, particularly dementia.

Conclusions: Consistent with guideline recommendations, in this cohort more intensive antidiabetic and cardiovascular therapy is used in those with more severe disease as measured by related co-morbidities. Cardiovascular medicines however may be under-utilised in those with un-related co-morbidities.

Item ID: 35790
Item Type: Article (Research - C1)
ISSN: 1872-8227
Keywords: diabetes, co-morbidity, antidiabetics, cardiovascular risk, ageing
Funders: National Health and Medical Research Council (NHMRC), Australian Research Council (ARC)
Projects and Grants: NHMRC/ARC Ageing Well Ageing Productively Program Grant
Date Deposited: 15 Oct 2014 16:48
FoR Codes: 11 MEDICAL AND HEALTH SCIENCES > 1117 Public Health and Health Services > 111702 Aged Health Care @ 100%
SEO Codes: 92 HEALTH > 9205 Specific Population Health (excl. Indigenous Health) > 920502 Health Related to Ageing @ 100%
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