Adjusted odds ratios (with 95% CI) for quality of care indicators by sub-region on December 31st, 2009. Age 20–74. OR and 95% CI were obtained using multiple logistic regression model with age, treatment, and sex as covariates. Italians were used as reference. OR estimation for Hb1Ac test excludes those who died or moved in 2010 (n = 302).