[Diabetes mellitus prevalence and associated factors in adults in Ribeirão Preto, São Paulo, Brazil, 2006: OBEDIARP Project].

To identify diabetes mellitus prevalence and associated factors, a cross-sectional epidemiological study was developed including participants aged 30 years and older living in Ribeirão Preto, São Paulo State, Brazil. Using three-stage cluster sampling, probability weights were applied, resulting in a weighted sample of 2,197 participants. Diabetes mellitus diagnosis was based on previous medical history or World Health Organization (WHO) cut-offs after oral glucose tolerance test. To investigate associated factors, crude and adjusted prevalence ratios were estimated by points and confidence intervals, using Poisson regression. Diabetes mellitus prevalence was 15.02%. After adjusting for potential confounding, factors associated with diabetes mellitus in the final model were: age; family history of diabetes mellitus; waist hip ratio; waist height ratio; number of medicines taken; and use of outpatient services. The results showed high diabetes mellitus prevalence and identified associated factors amenable to intervention.