Menstrual characteristics, disorders and associated risk factors among female international students in Zhejiang Province, China: a cross-sectional survey

Table 2 Menstrual Characteristics for the Change Group (n = 201).

Menstrual Characteristics	Parameters	Number	Percentage (%)
Age of menarche	9–10 years	33	16.42
	11–13 years	140	69.65
	14–16 years	28	13.93
	Total:	201	100.00
Menstrual regularity	Regular	152	75.62
	Irregular	49	24.38
	Total:	201	100.00
Menstrual Length	< 21 days	52	25.87
	21–35 days	88	43.78
	> 35 days	61	30.35
	Total:	201	100.00
Duration of flow	< 3 days	36	24.49
	3–7 days	68	46.26
	> 8 days	43	29.25
	Total:	147	100.00
Amount of flow	Little (4pads/day)	60	29.85
	Moderate (5–7 pads/day)	65	32.34
	Heavy (max 8pads/days)	76	37.81
	Total:	201	100.00
Dysmenorrhea (Abdominal cramps)		124	100.00
Premenstrual Symptoms(PMS)	Bloating	23	7.69
	Back Pain	12	4.01
	Headache	66	22.07
	Nausea & Vomiting	2	0.67
	Breast tenderness	13	4.35
	Constipation	0	0
	Irritability	16	5.35
	Fever	0	0
	Diarrhea	0	0
	Others	1	0.33
	None	39	13.04
	Total:	295	100.00

ISSN: 1472-6874