Original articlePhysical activity, sedentary behavior and all-cause mortality among blacks and whites with diabetes
Section snippets
Methods
Subjects for this study were participants in the SCCS, an ongoing, prospective cohort study designed to examine health disparities in the incidence and mortality of chronic illnesses. Details of study methods are provided elsewhere [9], [10], [11]; in brief, study participants were 40–79 years of age at enrollment and recruited from community health centers (85%) and general population mailings (15%) across a 12-state area of the southeastern United States (Alabama, Arkansas, Florida, Georgia,
Results
The 15,645 SCCS participants with diabetes (71.2% black, 28.8% white, and 65.0% female) had an average age at enrollment of 54.9 (8.9) years (Table 1). Approximately two-thirds of the population had a high school education or less, and more than 60% reported an annual household income of less than $15,000. Females were significantly more likely to report an annual household income of less than $15,000. Blacks were slightly younger than whites at both their time of enrollment and time of
Conclusions
In this prospective analysis of a racially diverse, low-income population with diabetes, we found that higher levels of total PA were associated with a 36% reduced risk of mortality after adjusting for ST. Increased total time spent in sedentary behaviors was linked to an approximate 21% increase in mortality risk in this population after adjusting for PA. Furthermore, the analysis of the joint associations of both PA and ST on mortality risk revealed that across all levels of ST, low levels of
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