Table 3.
Comparative analysis of repeat and nonrepeat donors in the SMS control and web-based intervention groups during the observation period.
| Items | SMS group | Web-based intervention group | Chi-square (df) | P value | |||||||
|
|
Repeat donation (n=21), n (%) | Nonrepeat donation (n=386), n (%) | Repeat donation (n=46), n (%) | Nonrepeat donation (n=239), n (%) |
|
|
|||||
| Sex | |||||||||||
|
|
Male | 13 (62) | 276 (71.5) | 36 (78) | 162 (67.8) | 24.3 (1) | <.001 | ||||
|
|
Female | 8 (38) | 110 (28.5) | 10 (22) | 77 (32.2) | 1.4 (1) | .24 | ||||
|
|
Intersex | 0 (0) | 0 (0) | 0 (0) | 0 (0) | N/Aa | N/A | ||||
| Age (years) | |||||||||||
|
|
18-25 | 5 (24) | 80 (20.7) | 17 (37) | 142 (59.4) | 1.6 (1) | .21 | ||||
|
|
26-30 | 7 (33) | 64 (16.6) | 10 (22) | 38 (15.9) | 2.8 (1) | .09 | ||||
|
|
31-35 | 3 (14) | 68 (17.6) | 6 (13) | 21 (8.8) | 5.6 (1) | .02 | ||||
|
|
36-40 | 1 (5) | 67 (17.4) | 4 (9) | 13 (5.4) | 8.3 (1) | .004 | ||||
|
|
41-45 | 5 (24) | 68 (17.6) | 7 (15) | 7 (2.9) | 14.9 (1) | <.001 | ||||
|
|
46-55 | 0 (0) | 39 (10.1) | 2 (4) | 18 (7.5) | 1.6 (1) | .22 | ||||
| Blood donation times | |||||||||||
|
|
0 time | 0 | 0 | 0 | 24 (10.0) | N/A | N/A | ||||
|
|
1 time | 17 (81) | 334 (86.5) | 12 (26) | 118 (49.4) | 3.2 (1) | .07 | ||||
|
|
2 times | 4 (19) | 52 (13.5) | 30 (65) | 87 (36.4) | 8.2 (1) | .004 | ||||
|
|
≥3 times | 0 (0) | 0 (0) | 4 (9) | 11 (4.6) | N/A | N/A | ||||
aN/A: not applicable.