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Table 3 Bivariate analyses showing association of individual and work-related factors with mental health status of workers in SMEs (N = 1200)

From: Mental health status and work environment among workers in small- and medium-sized enterprises in Guangdong, China-a cross-sectional survey

       Variables Poor psychological well-being
0 ~ 13 14 ~ 25
(N = 424, 35.3%) (N = 776, 64.7%)
Individual characteristics   
Age (years) (Mean ± SD) 28.6 ± 8.7** 32.4 ± 9.6
Gender   
 Men 265(40.2)** 388(59.8)
 Women 159(29.6) 388(70.4)
Marital status   
 Married/co-habiting 201(28.3)** 524(71.7)
 Single 220(46.3) 244(53.7)
 Divorced 3(33.3) 6(66.7)
Educational level   
 Primary school or lower 25(32.5) 54(67.5)
 Junior high school 202(33.9) 385(66.1)
 Senior middle school 163(37.1) 280(62.9)
 College or higher 34(37.4) 57(62.6)
Individual monthly income (yuan) (Mean ± SD) 2350 ± 855 2462 ± 826
Household registration   
Permanent resident workers 84(29.0)** 209(71.0)
Migrant workers 340(37.4) 567(62.6)
Physical work conditions   
Employment contract   
 Yes 386(34.5)* 728(65.5)
 No 38(45.7) 48(54.3)
Shift work schedule   
 Yes 179(38.5) 287(61.5)
 No 245(33.3) 489(66.7)
Work hours per week (hours) (Mean ± SD) 56.8 ± 7.9** 54.6 ± 8.0
Extent of exposure to hazardous environment (Mean ± SD) 5.8 ± 2.3** 5.3 ± 2.3
Psychosocial work conditions   
Job demands (Mean ± SD) 4.8 ± 1.4** 4.2 ± 1.5
Job autonomy (Mean ± SD) 9.8 ± 2.4** 10.9 ± 2.2
Worksite support (Mean ± SD) 7.4 ± 1.1 7.5 ± 1.0
  1. *P < 0.05, **P < 0.01.