Table 3: Rates of completion of diabetes management measures by physicians in the QIIP and control groups
MeasureTime; % of physiciansAdjusted % change, QIIP group v. control group (95% CI)*
12 mo before intervention or index date12 mo after intervention or index date
Hemoglobin A1c test:  2 in previous 12 moQIIP group41.151.44.3 (1.2 to 7.5)
Control group42.748.0
Retinal examination:  1 in previous 24 moQIIP group72.576.62.5 (0.8 to 4.4)
Control group71.673.3
Low-density lipoprotein cholesterol test:  1 in previous 12 moQIIP group56.964.01.3 (-2.1 to 4.6)
Control group59.564.7
Billing for diabetes flow sheet (K030):  1 in previous yrQIIP group27.642.88.8 (4.1 to 13.5)
Control group34.439.0
Billing for preventive care of diabetes (Q040)QIIP group21.739.18.9 (2.9 to 14.9)
Control group28.835.0
Diabetes medication management for patients with type 2 diabetes > 65 yr
    Prescribed statinQIIP group66.574.53.4 (0.8 to 6.0)
Control group67.671.9
Prescribed angiotensin-converting-enzyme inhibitor or angiotensin receptor blockerQIIP group74.178.44.1 (1.8 to 6.4)
Control group76.075.0
Prescribed orally administered hypoglycemic agentQIIP group59.659.20.8 (-1.8 to 3.3)
Control group58.757.6
    Prescribed insulinQIIP group17.118.5-0.3 (-2.3 to 1.7)
Control group15.917.9

Note: CI = confidence interval, QIIP = Quality Improvement and Innovation Partnership.

*Generalized linear regression adjusted for baseline value, sex, rurality, age and comorbidity (Johns Hopkins Adjusted Diagnosis Groups30).