Table 3.
Evaluation of similar menstrual changes before and after COVID-19 vaccination.
| Menstrual change after COVID-19 vaccination* | Have you experienced similar menstrual changes in the past? | P ** | ||
|---|---|---|---|---|
| Yes n (%) |
No n (%) |
|||
| Menstrual delay (n = 326) | Yes | 63 (34.6%) | 119 (65.4%) | <.001 |
| No | 38 (26.4%) | 106 (73.6%) | ||
| Prolongation of menstrual duration (n = 326) | Yes | 35 (26.3%) | 98 (73.7%) | .02 |
| No | 66 (34.2%) | 127 (65.8%) | ||
| Intermenstrual bleeding (n = 230) | Yes | 9 (18.4%) | 40 (81.6%) | .08 |
| No | 58 (32.0%) | 123 (68.0%) | ||
| Heavy bleeding (n = 74) | Yes | 15 (30.6%) | 34 (69.4%) | <.001 |
| No | 5 (20.0%) | 20 (80.0%) | ||
| Decrease in Menstrual Bleeding (n = 117) | Yes | 6 (20.0%) | 24 (80%) | .88 |
| No | 22 (25.3%) | 65 (74.7%) | ||
| Early menstruation (n = 196) | Yes | 1 (7.7%) | 12 (92.3%) | <.001 |
| No | 61 (33.3%) | 122 (66.7%) | ||
| Total | 101 (31.0%) | 225 (69.0%) | ||
The values in bold have a significant statistical difference.
*
Multiple responses were obtained.
**
McNemar test was used for the statistical analysis.