The Medical Home: What Do We Know, What Do We Need to Know? A Review of the Earliest Evidence on the Effectiveness of the Patient-Centered Medical Home Model

March 2013
AHRQ Publication No. 12(14)-0020-1-EF
Prepared For:
Agency for Healthcare Research and Quality, U.S. Department of Health and Human Services, 540 Gaither Road, Rockville, MD 20850,

Contract Numbers: HHSA290200900019I/HHSA29032002T, HHSA290200900019I/HHSA29032005T
Prepared By: Mathematica Policy Research, Princeton, NJ; Aparajita Zutshi, Ph.D., Deborah Peikes, Ph.D., M.P.A., Kimberly Smith, Ph.D., M.P.A., Melissa Azur, Ph.D. (Mathematica Policy Research),  Janice Genevro, Ph.D., Michael Parchman, M.D., David Meyers, M.D. (Agency for Healthcare Research and Quality).
Table 6. Summary of evidence on processes of care
 Statistically SignificantInconclusive
InterventionFavorableUnfavorableNot Statistically SignificantUncertain Statistical Significance

Note: A result is considered statistically significant if p<0.05. statistical significance is considered uncertain if the study did not account for clustering of patients within practices when calculating statistical significance.

Care Management Plus  1 year: Preventive Quality Indicator (PQI) hospitalizations among all patients, patients with diabetes, and patients without diabetes 2 years: PQI hospitalizations among all patients2 years: PQI hospitalizations among patients with and without diabetes
Geriatric Resources for Assessment and Care of Elders3 months;
6 months: Increased rates of antidepressant use, psychotherapy
1 year: Increased rates of antidepressant use, psychotherapy 1.5 years;
2 years: Increased rates of antidepressant use
 1 Year: 2 process of care measures
1.5 years;
2 years: Rates of psychotherapy
1 Year: 16 process of care measures