Variable Name | Category | The probability value of output among coal miners without CWP | |||
---|---|---|---|---|---|
 |  | <0.001 (n = 7959) | 0.001- (n = 5024) | 0.015- (n = 1292) | 0.1- (n = 144) |
Bir | (7)Before 1930 | 0(0.00) | 93(1.85) | 97(7.51) | 11(7.64) |
 | (6)1930- | 13(0.16) | 340(6.77) | 269(20.82) | 74(51.39) |
 | (5)1940- | 84(1.05) | 375(7.46) | 356(27.55) | 56(38.89) |
 | (4)1950- | 643(8.08) | 2436(48.49) | 570(44.12) | 3(2.08) |
 | (3)1960- | 4439(55.77) | 1729(34.41) | 0(0.00) | 0(0.00) |
 | (2)1970- | 2685(33.73) | 51(1.01) | 0(0.00) | 0(0.00) |
 | (1)After 1980 | 95(1.19) | 0(0.00) | 0(0.00) | 0(0.00) |
Age | (7)< 20 | 4011(50.39) | 1943(38.67) | 320(24.77) | 54(37.50) |
 | (6)20- | 3088(38.80) | 1985(39.51) | 650(50.31) | 63(43.75) |
 | (5)25- | 557(7.00) | 869(17.30) | 169(13.08) | 19(13.19) |
 | (4)30- | 215(2.70) | 122(2.43) | 112(8.67) | 5(3.47) |
 | (3)35- | 71(0.89) | 65(1.29) | 28(2.17) | 3(2.08) |
 | (2)40- | 16(0.20) | 34(0.68) | 11(0.85) | 0(0.00) |
 | (1)≥45 | 1(0.01) | 6(0.12) | 2(0.15) | 0(0.00) |
Year | (7)Before 1950 | 0(0.00) | 13(0.25) | 15(1.16) | 5(3.47) |
 | (6)1950- | 3(0.04) | 270(5.37) | 307(23.76) | 89(61.80) |
 | (5)1960- | 23(0.29) | 341(6.79) | 354(27.40) | 41(28.47) |
 | (4)1970- | 423(5.31) | 2084(41.48) | 512(39.63) | 7(4.86) |
 | (3)1980- | 3779(47.48) | 2282(45.42) | 101(7.82) | 2(1.39) |
 | (2)1990- | 3727(46.83) | 34(0.68) | 3(0.23) | 0(0.00) |
 | (1)After 2000 | 4(0.05) | 0(0.00) | 0(0.00) | 0(0.00) |
Job | (4)Tunneling | 1468(18.44) | 2490(49.56) | 861(66.64) | 130(90.28) |
 | (3)Combining | 182(2.29) | 443(8.82) | 45(3.48) | 0(0.00) |
 | (2)Mining | 1744(21.91) | 943(18.77) | 195(15.09) | 10(6.94) |
 | (1)Helping | 4565(57.36) | 1148(22.85) | 191(14.78) | 4(2.78) |
Time1 | Duration of dust exposure | 15.35 ± 5.85 | 20.57 ± 6.41 | 26.91 ± 8.01 | 25.70 ± 7.08 |
Time2 | Duration of ex-dust exposure | 0.69 ± 2.54 | 3.46 ± 6.51 | 8.30 ± 8.52 | 16.30 ± 9.25 |