Table 2 Summary of reactivated donors among all participants in the three groups
From: Effective methods for reactivating inactive blood donors: a stratified randomised controlled study
|  | Telephone group − 1 | SMS group − 2 | Control group −3 | P | ||
|---|---|---|---|---|---|---|
1 vs. 2 | 1 vs. 3 | 2 vs. 3 | ||||
Gender | ||||||
 Male | 164 (51.1) | 186 (55.2) | 158 (54.3) | 0.292 | 0.428 | 0.822 |
 Female | 157 (48.9) | 151 (44.8) | 133 (45.7) |  |  |  |
Age, yearsa | 36.8 ± 8.0 | 37.0 ± 8.0 | 37.3 ± 7.5 | 0.873 | 0.203 | 0.150 |
Previous donations, na | 4.8 ± 6.5 | 4.5 ± 3.5 | 4.4 ± 3.1 | 0.250 | 0.167 | 0.597 |
Type of re-donation | ||||||
 Whole blood | 306 (95.3) | 328 (97.3) | 282 (96.9) | 0.003 | 0.363 | 0.388 |
 Apheresis platelet | 15 (4.7) | 9 (2.7) | 9 (3.1) |  |  |  |
Additional donations, n | ||||||
 1 | 291 (90.7) | 305 (90.5) | 269 (92.4) | 0.213 | 0.318 | 0.752 |
 ≥ 2 | 30 (9.3) | 32 (9.5) | 22 (7.6) |  |  |  |