Table 1

Demographic characteristics of migrant workers with pneumoconiosis compared with state-owned enterprise workers with pneumoconiosis and migrant workers with non-pulmonary occupational diseases

Variables N (%)Migrant workers with pneumoconiosis n=198State-owned enterprise workers with pneumoconiosis n=205Migrant workers with non-pulmonary occupational diseases n=198
Gender
 Men195 (98.48)202 (98.54)158 (79.80)*
 Women3 (1.52)3 (1.46)40 (20.20)
Age
 21–4025 (12.63)11 (5.37)†37 (18.69)
 41–60155 (78.28)100 (48.78)†149 (75.25)
 61–8018 (9.09)78 (38.05)†12 (6.06)
 ≥800 (0.00)16 (7.80)†0 (0.00)
Household registration
 Rural198 (100.00)75 (36.59)198 (100.00)
 Cities and towns0 (0.00)130 (63.41)0 (0.00)
Body mass index
 <18.520 (10.10)7 (3.41)†9 (4.55)*
 18.5–24.9119 (60.10)135 (65.85)111 (56.06)
 25–29.954 (27.27)60 (29.27)66 (33.33)
 ≥305 (2.53)3 (1.46)12 (6.06)
Education
 Tertiary and above1 (0.51)7 (3.41)†10 (5.05)*
 Secondary/high school/vocational high school16 (8.08)39 (19.02)†69 (34.85)*
 Junior high school92 (46.46)97 (47.32)74 (37.37)
 Primary school and below89 (44.95)62 (30.24)†45 (22.73)*
Smoking
 Yes33 (16.67)63 (30.73)†41 (20.71)*
 Quit smoking93 (46.97)76 (37.07)†10 (5.05)*
 No72 (36.36)66 (32.20)147 (74.24)*
Someone smoking in the workplace
 Yes165 (83.33)142 (69.27)†82 (41.41)*
 No33 (16.67)63 (30.73)116 (58.59)
Drinking
 Yes68 (34.34)78 (38.05)†22 (11.11)*
 No130 (65.66)127 (61.95)176 (88.89)
Regular sleeping hours per night
 Yes70 (35.35)135 (65.85)†170 (85.86)*
 No128 (64.65)70 (34.15)28 (14.14)
Average monthly income (¥)
 <3000125 (63.13)66 (32.20)†45 (22.73)*
 3000–600052 (26.26)96 (46.83)†117 (59.09)*
 6000–900015 (7.58)41 (20.00)†34 (17.17)*
 ≥90006 (3.03)2 (0.98)2 (1.01)
Regular employment
 Yes81 (40.91)205 (100.00)159 (80.30)*
 No117 (59.09)0 (0.00)39 (19.70)
  • *Migrant workers with pneumoconiosis versus migrant workers with non-pulmonary occupational diseases: p<0.05/n, where n is the total number of Bonferroni correction tests.

  • †Migrant workers with pneumoconiosis versus state-owned enterprise workers: p<0.05/n, where n is the total number of Bonferroni correction tests.