Building the Evidence Base for the Medical Home: What Sample and Sample Size Do Studies Need?

October 2011
AHRQ Publication No. 11-0100-EF
Prepared For:
Agency for Healthcare Research and Quality, U.S. Department of Health and Human Services, 540 Gaither Road, Rockville, MD 20850,

Contract Number: HHSA290200900019I TO2
Prepared by: Mathematica Policy Research Princeton, NJ; Deborah Peikes, Mathematica Policy Research; Stacy Dale, Mathematica Policy Research; Eric Lundquist, Mathematica Policy Research; Janice Genevro, Agency for Healthcare Research and Quality; and David Meyers, Agency for Healthcare Research and Quality
Table 2. Average ICC reported in studies in our literature review
CostsHospitalizationsEmergency Room VisitsOverall SatisfactionAccess to CareProcess Measures
Source: Estimates compiled by authors. Appendix E provides more details.
Note: n denotes the number of studies that were included in the average for each cell.
0.026 (n=2)0.023 (n=3)0.022 (n=4)0.019 (n=3)0.098 (n=3)0.104 (n=3)