Table 2.
Contact and Time Requirements for Recruitment and Survey Return (n = 41)
| Action | Recruitment | Survey Return |
| Number of calls made: | ||
| Total (mean) | 154 (3.8) | 89 (2.2) |
| 0 | - | 19 |
| 1 | 8 | 7 |
| 2 | 13 | 1 |
| 3–7 | 16 | 12 |
| >7 | 4 | 2 |
| Number of phone discussions: | ||
| Total (mean) | 84 (2.0) | 49 (1.2) |
| 0 | - | 20 |
| 1 | 24 | 9 |
| 2–3 | 10 | 8 |
| 4–6 | 7 | 4 |
| Days from first call to last: | ||
| Mean | 13.5 | 13.9 |
| 0 | - | 19 |
| 1–7 | 22 | 7 |
| 8–14 | 4 | 1 |
| 15–21 | 6 | 3 |
| 22–28 | 3 | 0 |
| >28 | 4 | 11 |
| Recruitment required approval from others | 10 | N/A |
| Number of days if approval required: range (mean) | 13–97 (36) | N/A |