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Table 3 Occupational characteristics of coal miners with different probability values of output(%)

From: Identification and classification of high risk groups for Coal Workers' Pneumoconiosis using an artificial neural network based on occupational histories: a retrospective cohort study

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

  1. The number of ( ) is possible value of different variables in neural network analysis