Table 2: Comparison of participants' menstrual changes with the number of doses of COVID-19 vaccine.
|
Menstrual change
|
First dose (n:9) |
Second dose (n:584) |
Total (n:593) |
Test value |
|||||
|
n |
% |
n |
% |
n |
% |
X2 |
p |
||
|
Effect of the vaccine on the menstrual cycle |
|||||||||
|
Yes |
3 |
33.3 |
144 |
24.7 |
147 |
24.8 |
0.357 |
0.550 |
|
|
No |
6 |
66.7 |
440 |
75.3 |
446 |
75.2 |
|||
|
Post-vaccine dysmenorrhea |
|||||||||
|
Yes |
7 |
77.8 |
433 |
74.1 |
440 |
74.2 |
0.063 |
0.802 |
|
|
No |
2 |
22.2 |
151 |
25.9 |
153 |
25.8 |
|||
|
Increase in menstrual days after vaccination |
|||||||||
|
Yes |
5 |
55.6 |
59 |
10.1 |
64 |
10.8 |
11.106 |
0.001 |
|
|
No |
4 |
44.4 |
525 |
89.9 |
529 |
89.2 |
|||
|
Increase in menstrual bleeding after vaccination |
|||||||||
|
Yes |
4 |
44.4 |
66 |
11.3 |
70 |
11.8 |
6.128 |
0.013 |
|
|
No |
5 |
55.6 |
518 |
88.7 |
523 |
88.2 |
|||
*X2 : Chi-square analysis, p < 0.05