Table 4.

Multivariate analysis of migrant workers who had sexual behavior with casual extramarital partner within the past year by gender

Variable	Model 1 (Female)				Model 1 (Male)
	Casual extramarital partner	Non- Casual extramarital partner	P	OR (95 % CI)	Casual extramarital partner	Non- Casual extramarital partner	P	OR (95 % CI)
Number of subjects, n	225	2028			498	1937
Age, y
18–34	153	1058	0.73	1	217	822	0.07	1
35–65	72	970		0.94(0.64–1.37)	281	1115		0.81(0.64–1.02)
Marital status
Married	141	1820	0.04	1	364	1632	<0.01	1
Unmarried	84	208		0.57(0.33–0.99)	134	305		0.51(0.36–0.74)
Education
Primary school or below	49	543	0.01	1	160	659	0.11	1
Junior high school	121	1051		2.13(1.29–3.53)	271	978		0.91(0.65–1.27)
High school or above	54	435		1.37(0.91–2.05)	67	300		0.79(0.62–0.99)
Occupation
Manufacture	67	863	<0.01	1	273	937	0.05	1
Construction	7	73		1.10(0.46–2.63)	110	500		1.40(1.05–1.87)
Accommodation/catering	10	160		1.49(0.74–3.00)	28	97		1.16(0.74–1.82)
Domestic service	21	384		1.89(1.09–3.28)	20	109		1.66(1.01–2.75)
Wholesale/retail	18	348		1.48(0.85–2.59)	33	180		1.53(1.02–2.29)
Entertainment	102	200		0.27(0.17–0.41)	34	114		1.31(0.85–2.01)
Monthly income (RMB:yuan)
< 2500	113	1405	0.38	1	211	792	0.97	1
≥ 2500	112	623		0.86(0.61–1.21)	287	1145		1.00(0.82–1.24)
Housing
Dormitory	40	317	0.03	1	177	662	0.30	1
Renting with friends	82	1229		1.67(1.06–2.65)	150	703		1.26(0.94–1.68)
Renting with family	60	165		0.84(0.50–1.42)	58	197		1.04(0.73–1.48)
Renting alone	35	207		1.26(0.73–2.19)	94	284		0.91(0.67–1.25)
Self-buying	8	110		1.02(0.43–2.40)	19	91		1.27(0.73–2.22)
Children (yes/no)
Yes, but not in Shanghai	72	821	0.38	1	200	855	0.93	1
Yes, in Shanghai	58	900		1.10(0.75–1.62)	158	707		1.10(0.75–1.62)
No children	95	307		0.73(0.43–1.24)	140	375		0.93(0.64–1.36)