Table 3.

Comparison of Proportions of Quality Measures Met at Baseline and During the Intervention Period Between Those Seen in the Expanded Medical Home (Ypsilanti Health Center/Regional Alliance for Healthy Schools) versus Those Seen Only at Their Primary Care Physician's Office (Ypsilanti Health Center Only)*

Quality MeasureBaseline (September 1, 2013, through August 31, 2014)Intervention (September 1, 2014, through June 30, 2015)Differences in Improvements Between Groups, % (P Value)
YHC/RAHSYHC OnlyDifference in Patients Meeting Metric, % (P Value)YHC/RAHSYHC OnlyDifference in Patients Meeting Metric, % (P Value)
Asthma Action Plan65.0 (13/20)46.0 (46/100)19 (.19)92.3 (24/26)77.2 (71/92)15.1 (.10)−3.9 (.78)
Influenza vaccination
    Patients with asthma58.6 (17/29)62.0 (93/150)−3.4 (.89)73.5 (25/34)55.6 (69/124)17.9 (.09)21.3 (.11)
    All patients57.8 (111/192)48.4 (619/1279)9.4% (.02)58.8 (141/240)49.4 (511/1035)9.4 (.01)0 (.99)
Nutrition/physical activity counseling§48.5 (50/103)14.8 (75/508)33.7 (<.001)53.8 (63/117)19.1 (74/387)34.7 (<.001)1 (.90)
Spirometry for patients with asthma48.3 (14/29)46.0 (69/150)2.3 (.98)61.8 (21/34)43.5 (54/124)18.3 (.09)16 (.25)
Well-child visit71.4 (137/192)65.6 (839/1279)5.8 (.14)77.1 (185/240)69.9 (723/1035)7.2 (.03)1.4 (.75)
  • Data are % (n/N) unless otherwise indicate. Bold values indicate statistically significant difference.

  • * The baseline time period was 12 months and the intervention time period was 10 months. Comparisons are made using the χ2 test unless otherwise stated.

  • Difference in between-group differences was determined using a z-test. An overall measure of the effect that the expanded medical home had on the likelihood of receiving the recommended services was evaluated through logistic regression with a binary indicator for receiving the service as the outcome and group (Ypsilanti Health Center [YHC]/Regional Alliance for Healthy Schools [RAHS] vs YHC only), time, and service type as covariates. Patients seen in the expanded medical home had a higher likelihood of receiving quality metric services than patients seen in the YHC only (odds ratio, 1.8; 95% confidence interval, 1.57–2.05) across all measures.

  • Comparison via Fisher exact test.

  • § For patients with a body mass index within or above the 85th percentile.