In prespecified subgroup analyses , the intervention was associated with greater BP control in patients without diabetes mellitus ( IC = 54.0 % versus UC = 44.7 % ; odds ratio , 1.45 [ confidence interval , 1.02-2 .06 ] ) ; and small-sized community health centers ( IC = 51.1 % versus UC = 39.6 % ; odds ratio , 1.45 [ confidence interval , 1.04-2 .45 ] ) .