Epidemiological survey of adult female stress urinary incontinence

BMC Women's Health

Table 2 Relationship between obstetrical and gynecological factors and SUI

Relevant factors	N	SUI		χ²	P
Relevant factors	N	N	%	χ²	P
Age at menarche
11	191	42	22	15	0.001
12–15	2794	973	34.8
> 15	1019	326	32
Sexual history
Yes	3145	1178	37.5	103	< 0.001
No	859	163	19
Oral contraceptives
Yes	854	328	38.4	12	0.001
No	3150	1013	32.2
Number of pregnancies
0	1222	212	17.3	221	< 0.001
1–2	1652	623	37.7
≥ 3	1130	506	44.8
Number of miscarriages
0	2450	710	29.5	55	< 0.001
1–2	1389	571	41.1
≥ 3	210	60	28.6
Age at first birth
< 20	78	33	42.3	211	< 0.001
20–25	1409	569	40.4
26–30	1170	492	42.1
> 30	103	22	21.4
Mode of delivery
Vaginal	2038	906	44.5	235	< 0.001
Cesarean section	693	187	27
Birth weight (kg)
< 3.5	1692	694	41	184	< 0.001
≥ 3.5	1040	409	39.3
Number of deliveries
0	1828	390	21.3	227	< 0.001
1–2	1764	754	42.7
≥ 3	412	197	47.8
Episiotomy
Yes	594	320	53.9	233	< 0.001
No	2169	784	36.1
Dystocia
Yes	201	106	52.7	190	< 0.001
No	2570	1004	39.1
Menopause
Yes	1040	394	37.9	12	< 0.001
No	2964	947	32

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