Beryl Pilkington

Diabetes prevalence and income: Results of the Canadian Community Health Survey

UNLABELLED This paper contributes to a growing body of literature indicating the importance of income as a key socioeconomic status marker in accounting for the increased prevalence of type 2 diabetes (T2DM). METHODS We analyzed data from the Canadian Community Health Survey cycle 3.1 conducted by Statistics Canada. Descriptive statistics on the prevalence of self-reported diabetes were computed. Multiple logistic regression was used to examine the association between income and prevalence of T2DM. RESULTS In 2005 an estimated 1.3 million Canadians (4.9%) reported having diabetes. The prevalence of T2DM in the lowest income group is 4.14 times higher than in the highest income group. Prevalence of diabetes decreases steadily as income goes up. The likelihood of diabetes was significantly higher for low-income groups even after adjusting for socio-demographic status, housing, BMI and physical activity. There is a graded association between income and diabetes with odds ratios almost double for men (OR 1.94, 95% CI 1.57-2.39) and almost triple for women (OR 2.75 95% CI 2.24-3.37) in the lowest income compared to those in highest income. CONCLUSION These findings suggest that strategies for diabetes prevention should combine person-centered approaches generally recommended in the diabetes literature research with public policy approaches that acknowledge the role of socioeconomic position in shaping T2DM prevalence/incidence.

The dynamics of the relationship between diabetes incidence and low income: Longitudinal results from Canada's National Population Health Survey

UNLABELLED This paper sheds light on the dynamic relationship between peoples experiences of low income and the development of type 2 diabetes (T2DM) by moving beyond the static perspective provided by cross-sectional studies to a long-term approach informed by longitudinal analyses. METHODS We analyzed data from the Canadian National Population Health Survey (NPHS) conducted by Statistics Canada from 1994 to 2007. The longitudinal sample is composed of 17,276 respondents (8046 males, 9230 females) 12 years of age or older. We further developed an algorithm to distinguish T2DM from other types of diabetes. Proportional hazard models with time-varying predictors were used to explore the dynamics of the relationship between low income and T2DM. RESULTS The results suggest that living in low income and experiencing persistent low income are significant precursors of developing T2DM. Being in low income in the previous cycle of T2DM onset was associated with 77% higher risk of T2DM (hazard ratio 1.77; 95% CI: 1.48-2.12). The association between low income and diabetes incidence remains significant after adjusting for age, sex, health behaviors, and psychological distress (hazard ratio 1.24; 95% CI: 1.02-1.52). CONCLUSION This study contributes to the under-developed research examining longitudinally the relationship between socioeconomic status and diabetes incidence. Employing this long-term approach, this study calls attention to the primary effect of socioeconomic position on diabetes incidence that cannot be explained entirely by behavioral factors. Findings draw attention to the need to address the role played in T2DM by the inequitable distribution of the social determinants of health.

A toxic combination of poor social policies and programmes, unfair economic arrangements and bad politics: the experiences of poor Canadians with Type 2 diabetes

Type 2 diabetes (T2DM) is a serious life-threatening chronic disease whose prevalence is especially high among Canadians living in poverty. And these Canadians with T2DM in poverty are especially likely to experience serious consequences of the disease. Of special concern is Statistics Canada reporting an explosive increase in mortality rates from diabetes (of which 90% represent T2DM) in low-income urban neighbourhoods across Canada. We place findings from interviews with 60 Canadians with T2DM who live in poverty within the context of recent shifts in public policy that have affected the distribution of the social determinants of health. Findings of material deprivation among our participants indicate that it is almost impossible for these individuals to acquire the diet necessary to prevent the adverse outcomes associated with T2DM. These findings draw attention to consideration of the important role public policy plays in affecting the situation of people living in poverty who are afflicted with T2DM and other chronic diseases.