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Table 4 Likelihood of influenza vaccination at the end of the year 1 randomized controlled cluster trial (1/31/2014) using generalized estimating equations, by city

From: Using the 4 pillars™ practice transformation program to increase adult influenza vaccination and reduce missed opportunities in a randomized cluster trial

Variable Pittsburgh Houston
Odds Ratio (95 % CI) P Value Odds Ratio (95 % CI) P Value
Patient level variables
 Female, ref. = male 1.08 (1.03-1.13) 0.002 0.98 (0.93-1.03) 0.170
 Age, years 1.04 (1.04-1.04) <0.001 1.03 (1.03-1.03) <0.001
 White race, ref. = Non-white 1.16 (1.04-1.30) 0.007 -- --
 Hispanic ethnicity, ref. = Non-Hispanic -- -- 1.12 (1.08-1.16) <0.001
 Medicaid, charity care, uninsured, ref. = Commercial insurance + Medicare 0.97 (0.89-1.05) 0.050 0.95 (0.88-1.02) 0.153
Site level variables
 Intervention, ref. = Control 1.00 (0.95-1.05) 0.950 1.06 (1.00-1.13) 0.048
 Patients with ≥1 missed opportunities, % 0.94 (0.94-0.95) <0.001 0.94 (0.94-0.95) <0.001