Table 1.

Demographic Characteristics of Study Participants, by Migrant Status

		Migrant Status
		Urban non- migrant	Rural non- migrant	Rural-to- urban migrant	Urban-to- urban migrant	Total	P-value
		n=443	n=274	n=123	n=119	N=959
Age cohort							0.059
15–19 years		23.3	16.1	10.4	17.0	19.3
20–24 years		76.7	83.9	89.6	83.0	80.7
Female		38.7	49.1	45.7	38.1	42.5	0.044
Wealth tertile							<0.001
Low		13.6	37.5	87.6	59.4	32.5
Mid		65.5	48.4	8.6	33.3	51.7
High		20.9	14.0	3.7	7.4	15.8
Current in job/School							<0.001
In School but no Job		26.7	11.2	1.2	19.1	18.8
Neither job nor school		10.8	34.7	11.2	6.0	17.6
Both Job and School		11.7	1.8	0.0	12.2	7.7
Job but no school		50.8	52.3	87.6	62.6	55.9
Highest Educational Level							<0.001
Primary or less		0.1	0.4	0.8	0.7	0.3
Junior Secondary		14.8	47.7	84.4	28.7	32.7
Senior Secondary		51.9	46.0	11.0	38.6	44.9
College/University/Graduate		33.3	6.0	3.8	32.0	22.1
Type of Work							<0.001
Professional		32.9	13.1	4.6	23.4	23.0
Unprofessional		65.1	85.7	95.4	62.6	74.1
Other		1.9	1.2	0.0	14.0	2.9
Family Structure							<0.001
Parents		79.7	51.6	0.0	19.4	57.5
Alone		1.6	3.9	0.8	6.4	2.7
Other Relatives		6.4	24.6	11.9	10.6	12.8
Friends/Dorm		12.4	20.0	87.3	63.6	27.0
Speak Shanghainese dialect		97.7	89.5	42.1	47.4	84.8	<0.001
No household registration (no hukou)		0.6	1.4	98.4	66.4	16.8	<0.001
Reason for Migration							<0.001
School/university		N/A	N/A	1.2	26.0	14.3
Activity		N/A	N/A	90.7	37.7	62.8
Other		N/A	N/A	8.0	36.3	22.9
Recency of migration (years)		N/A	N/A	3.0	5.1	4.1	0.008
Early sex (20 years or younger)		66.1	47.4	53.3	61.9	59.0	0.001
Mean age of sex (years)		19.8	20.5	20.2	20.1	20.1	0.004
Condom use at first sex		36.4	28.8	16.9	35.7	32.3	0.031
Consistent use with first partner		29.1	11.3	9.6	33.0	22.4	0.000