Table 1 Recruitment figures: CMHS Cohort, California.
From: California Men's Health Study (CMHS): a multiethnic cohort in a managed care setting
Mailing Wave | Total number Recruited | Number of responses | Response % |
|---|---|---|---|
1 and 2 (paper with electronic option1) | |||
Short questionnaire | 503 237 | 114 953 | 22.8 |
Long questionnaire | 114 953 | 67 413 | 58.6 |
3 (electronic with paper option2) | |||
Short questionnaire | 345 262 | 19 107 | 5.4 |
Long questionnaire | 19 107 | 16 757 | 87.7 |
Total – 1, 2 and 3 | |||
Short questionnaire | 848 499 | 134 060 | 15.8 |
Paper | 103 383 | ||
Electronic | 30 677 | ||
Long questionnaire | 134 060 | 84 170 | 62.8 |
Paper | 57 204 | ||
Electronic | 26 966 |