Effect of socioeconomic status on mortality among people with type 2 diabetes: a study from the Scottish Diabetes Research Network Epidemiology Group

Jeremy J. Walker, Shona J. Livingstone, Helen M. Colhoun, Robert S. Lindsay, John A. Mcknight, Andrew D. Morris, John R. Petrie, Sam Philip, Naveed Sattar, Sarah H. Wild, Scottish Diabet Res Network

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Abstract

OBJECTIVE-The study objective was to describe the effect of socioeconomic status (SES) on mortality among people with type 2 diabetes.

RESEARCH DESIGN AND METHODS-We used a population-based national electronic diabetes database for 35- to 84-year-olds in Scotland for 2001-2007 linked to mortality records. SES was derived from an area-based measure with Q5 and Q1 representing the most deprived and affluent quintiles, respectively. Poisson regression was used to estimate relative risks (RRs) for mortality among people with type 2 diabetes compared with the population without diabetes stratified by age (35-64 and 65-84 years), sex, duration of diabetes (< 2 and >= 2 years), and SES.

RESULTS-Complete data were available for 210,994 eligible individuals (99.4%), and there were 33,842 deaths. Absolute mortality from all causes among people with type 2 diabetes increased with increasing age and socioeconomic deprivation and was higher for men than women. RR for mortality associated with type 2 diabetes was highest for women aged 35-64 years in Q1 with diabetes duration < 2 years at 4.83(95% CI 3.15-7.40) and lowest for men aged 65-84 years in Q5 with diabetes duration >= 2 years at 1.13 (1.03-1.24).

CONCLUSIONS-SES modifies the association between type 2 diabetes and mortality so that RR for mortality is lower among more deprived populations. Age, sex, and duration of diabetes also interact with type 2 diabetes to influence RR of mortality. Differences in prevalence of comorbidities may explain these findings.

Original languageEnglish
Pages (from-to)1127-1132
Number of pages6
JournalDiabetes Care
Volume34
Issue number5
Early online date18 Mar 2011
DOIs
Publication statusPublished - May 2011

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Keywords

  • adult
  • aged
  • diabetes mellitus, type 2
  • female
  • humans
  • male
  • middle aged
  • socioeconomic factors

Cite this

Walker, J. J., Livingstone, S. J., Colhoun, H. M., Lindsay, R. S., Mcknight, J. A., Morris, A. D., ... Scottish Diabet Res Network (2011). Effect of socioeconomic status on mortality among people with type 2 diabetes: a study from the Scottish Diabetes Research Network Epidemiology Group. Diabetes Care, 34(5), 1127-1132. https://doi.org/10.2337/dc10-1862