Impact of COVID-19 infections and vaccination on menstrual cycle symptoms in the south of Jordan: a cross-sectional study

Journal of the Egyptian Public Health Association

Table 2 Comparison of self-reported menstrual changes between Sinopharm and Pfizer COVID-19 vaccines

Symptoms	Sinopharm		Pfizer		P-value
Irregular MC	Frequency	%	Frequency	%	P-value
Light MC	16	10.3	36	15.1	0.222
Heavy MC	13	8.4	15	6.3	0.5589
Dysmenorrhea	10	6.5	18	7.6	0.8274
Intermenstrual bleeding	6	3.9	13	5.5	0.6326
Amenorrhea	0	0	5	2.1	0.1752
Post-menopausal bleeding	0	0	2	0.8	0.6753
	0	0	0	0