Table 1

Sociodemographic characteristics of the sample by residence status and gender n(%)



Urban
Rural
Migrant



M
F
M
F
M
F


N = 843
n = 1115
n = 749
n = 1160
n = 2198
n = 1050

Age in years
Mean (SD)
36 (12.1)
34 (8.8)
39 (13.4)
35 (11.9)
29 (8.3)
25 (6.8)

Education
Primary
88 (11)
93 (8.4)
378 (50)
915 (79)
253 (11)
126 (12)

Middle
278 (33)
425 (38)
250 (33)
187 (16)
1259 (58)
683 (65)

High
309 (37)
416 (37)
106 (14)
47 (4.1)
616 (28)
220 (21)

Tertiary
168 (18)
170 (15)
15 (2)
11 (0.9)
66 (2.7)
21 (2.0)

Marital status
Single
172 (20)
134 (12)
85 (11)
38 (3.3)
934 (43)
557 (53)

Married
659 (78)
946 (85)
624 (83)
1041 (89)
1203 (55)
484 (46)

Other
12 (1.4)
35 (2.9)
40 (5.3)
81 (7)
61 (2.5)
9 (0.9)

Child/ren
Yes
617 (73)
920 (83)
642 (86)
1101 (95)
1105 (50)
399 (38)

Occupation
Agriculture
30 (3.5)
35 (3.1)
584 (78)
731 (63)
2 (0.2)
0

Factory**
420 (49)
460 (41)
16 (2)
58 (5)
903 (39)
617 (59)

Construction
22 (2.6)
5 (0.5)
0
0
599 (29)
2 (0.2)

Hotels/bars
101 (12)
280 (25)
13 (2)
70 (6)
549 (20)
229 (22)

Retail (shops)
85 (10)
113 (10)
14 (2)
0
131 (6)
11 (1)

Transport
0
0
7 (1)
0
14 (1.2)
3 (0.3)

Domestic service
16 (2)
2 (0.2)
0
35 (3)
0
29 (2.8)

Self-employed
118 (14)
111 (10)
46 (6)
81 (7)
73 (3.3)
65 (6.3)

Other
51 (6)
109 (9.9)
67 (9)
185 (16)
35 (1.6)
33 (3)

Personal Income/Month in RMB*
<700
46 (5.5)
178 (16)
471 (63)
840 (72)
329 (15)
283 (27)

701–1500
506 (60)
710 (64)
258 (34)
304 (26)
1626 (74)
703 (67)

>1501
291 (35)
227 (01)
20 (2.7)
16 (1.4)
243 (11)
64 (6.1)

Median (IQR)
1100 (1200)
900 (600)
550 (500)
480 (400)
900 (250)
800 (250)

*US$1 = 8.2 Chinese Renminbi (RMB)

** Of the 34 factories involved 16 were textile, 6 foodstuff, 5 electrical, 4 steel, 3 chemical

Hesketh et al. BMC Public Health 2007 7:29   doi:10.1186/1471-2458-7-29