Table 3

Percentages of Patients Whose Care Met Quality Standards During the 3-Year Observation Period

EHR Practices (n=16)Non-EHR Practices (n=26)EHR vs Non-EHR PracticesAll Practices (N=42)
Quality Measure and Time Point% of Patients, Mean (SD)F2,45 (P Value)% of Patients, Mean (SD)F2,75 (P Value)F1,2222 (P Value)% of Patients, Mean (SD)F2,123 (P Value)
Processes of care (3 of 5 criteria met)
 Baseline45.1 (16.8)0.44 (.65)55.5 (24.9)0.40 (.67)0.02 (.98)51.5 (22.5)0.86 (.43)
 1-Year follow-up45.0 (27.7)57.2 (22.3)52.5 (24.9)
 2-Year follow-up51.1 (19.8)60.7 (20.9)57.0 (20.8)
Treatment (all criteria met)
 Baseline38.2 (14.3)2.81 (.07)47.2 (24.9)1.28 (.28)0.59 (.55)43.8 (16.5)3.26 (.04)
 1-Year follow-up42.2 (18.4)47.3 (20.1)45.4 (19.4)
 2-Year follow-up48.6 (13.5)53.5 (19.8)51.7 (17.6)
Outcomes (2 of 3 targets met)
 Baseline44.8 (15.3)0.71 (.50)52.5 (15.0)4.32 (.02)0.30 (.74)49.6 (15.4)4.68 (.01)
 1-Year follow-up44.8 (15.3)52.8 (16.3)49.8 (16.2)
 2-Year follow-up49.9 (16.0)61.9 (15.2)57.4 (16.4)
Outcomes (all targets met)
 Baseline10.3 (6.4)2.21 (.12)15.1 (9.7)3.53 (.03)0.08 (.93)13.3 (8.8)9.49 (.003)
 1-Year follow-up11.1 (7.8)15.3 (11.2)13.7 (10.1)
 2-Year follow-up15.9 (9.4)21.5 (12.7)19.4 (11.8)
  • EHR=electronic health record.

  • Notes: F statistics and P values were calculated using hierarchical models with pseudo-likelihood estimation to determine whether changes in rates were significant for either EHR or non-EHR practices over time or whether rates of changes differed between the 2 groups over time. Results are unadjusted for covariates.