Table 1 Cohort Study Sampling Results
From: Physicians in private practice: reasons for being a social franchise member
Year of Cohort | Total SQH membership in 2009 | Total enrolled in sample | Total reporting/included in analysis | Attrition | Attrition Rate |
|---|---|---|---|---|---|
2005 | 76 | 58 | 52 | 9 | 15.5% |
2007 | 87 | 76 | 75 | 4 | 5.3% |
2009 | 103 | 82 | 77 | 13 | 15.9% |
Total | 266 | 216 | 204 | 26 | 12.0% |