A population-based analysis of the health experience of African Nova Scotians

Kisely, Steve; Terashima, Mikiko; Langille, Don
September 2008
CMAJ: Canadian Medical Association Journal;9/23/2008, Vol. 179 Issue 7, p653
Academic Journal
Background: People of African descent living in Britain and the United States have higher rates of morbidity from chronic disease than among the general population. We investigated whether the same applied to people of African descent living in a Canadian province. Methods: We used administrative data to calculate 10-year cumulative incidence rate ratios for the period 1996 —2005 for treated circulatory disease, diabetes mellitus and psychiatric disorders in Preston (population 2425), a community of predominantly African Nova Scotians. We used data for the province of Nova Scotia as a whole as the population reference standard. We also calculated 10-year incidence rate ratios for visits to family physicians and specialists and for admissions to hospital. We compared these findings with those in 7 predominantly white communities in Nova Scotia with otherwise similar socio-economic characteristics. Results: In the province as a whole, we identified 787 787 incident cases for the 3 disease groups over the 10-year period. Incidence rate ratios for the community of interest relative to the provincial population were significantly elevated for the 3 diseases: circulatory disease (1.19, 95% CI 1.08—1.29), diabetes (1.43, 95% CI 1.21—1.64) and psychiatric disorders (1.13, 95% CI 1.06—1.20). Incidence rate ratios in the community of interest were also higher than those in the comparison communities. Visits to family physicians and specialists for circulatory disease and diabetes were similarly elevated, but the pattern was less clear for visits for psychiatric disorders and hospital admissions. Interpretation: African Nova Scotians had higher morbidity levels associated with treated disease, which could not be explained by socio-economic haracteristics, recent immigration or language. Apart from psychiatric disorders, use of specialist services was consistent with morbidity. Further study is needed to investigate the relative contribution of genetic, biological, behavioural, psychosocial and environmental factors.


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