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, www.ahrq.gov

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 7. Summary of evidence on health outcomes
 Statistically SignificantInconclusive
InterventionFavorableUnfavorableNot Statistically SignificantUncertain Statistical Significance
Note: For all outcomes, 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 Significane.
Geriatric Resources for Assessment and Care of Elders2 years: Improved 4 of 8 Short Form (SF)-36 scales 2 years: 4 of 8 SF-36 scales, Activities of Daily Living (ADLs), Instrumental Activities of Daily Living, and days in bed 
Improving Mood–Promoting Access to Collaborative Treatment3 months;
6 months: Reduced depression symptoms, overall impairment; improved overall quality of life
1 year: Reduced depression symptoms, overall impairment; improved SF-12 physical component score, quality of life, and general health
1.5 years: Reduced depression symptoms, overall impairment; improved SF-12 physical component score, quality of life, and general health
2 years: Reduced depression symptoms, improved SF-12 physical component score, quality of life, and general health
 2 years: Overall impairment1 Year: 16 process of care measures
Veterans Affairs Team-Managed Home-Based Primary Care 1 year: Worsened 1 of 8 SF-36 scales for nonterminal patients1 year: Barthel index and 7 of 8 SF-36 scales for nonterminal patients