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Table 2 Diagnosis age and exposure duration of pneumoconiosis cases in Zhejiang Province from 2006 to 2020

From: Characteristics of pneumoconiosis in Zhejiang Province, China from 2006 to 2020: a descriptive study

Characteristics

Pneumoconiosis cases, n (%)

Diagnosis age, year

Exposure duration, year

Total

6037 (100.00%)

55.44 ± 10.14

11.00 (6.50, 18.00)

Gender

   

Male

5865 (97.15%)

55.30 ± 10.07

11.00 (6.42, 18.00)

Female

172 (2.85%)

60.19 ± 11.30

12.04 (9.25, 20.00)

P value

-

< 0.001

0.003

Category

   

Silicosis

4357 (72.17%)

55.43 ± 9.82

11.00 (6.25, 18.50)

CWP

992 (16.43%)

59.58 ± 9.10

12.00 (8.00, 18.00)

Welders’ pneumoconiosis

294 (4.87%)

43.31 ± 7.22

9.00 (6.00, 12.08)

Others

394 (6.53%)

54.28 ± 10.41

10.33 (6.60, 16.54)

P value

-

< 0.001

< 0.001

Stage

   

Stage I

3349 (55.47%)

54.99 ± 10.83

10.67 (6.00, 18.25)

Stage II

1294 (21.43%)

55.20 ± 9.54

11.08 (6.92, 18.00)

Stage III

1394 (23.09%)

56.75 ± 8.78

11.75 (7.92, 17.42)

P value

-

< 0.001

0.011

First year of dust exposure

   

<1980

2354 (38.99%)

63.10 ± 7.82

13.00 (7.00, 20.56)

1980-

1164 (19.28%)

54.81 ± 7.41

15.00 (10.00, 20.27)

1990-

927 (15.36%)

50.04 ± 8.14

13.33 (9.00, 18.29)

2000-

1262 (20.90%)

47.55 ± 7.70

8.33 (5.58, 11.00)

2010-

330 (5.47%)

48.40 ± 6.99

4.25 (2.92, 6.00)

P value

-

< 0.001

< 0.001

Industry type

   

Mining industry

2241 (37.12%)

55.63 ± 9.17

13.17 (8.00, 20.08)

Manufacturing industry

1878 (31.11%)

49.73 ± 9.50

10.00 (6.08, 15.17)

Construction industry

162 (2.68%)

54.39 ± 9.54

10.00 (5.08, 18.50)

Traffic, storage and mail business

127(2.10%)

63.20 ± 10.39

8.67 (4.00, 29.13)

Neighborhood services and other service industry

74 (1.23%)

63.28 ± 7.02

11.08 (8.08, 14.08)

Public administration and social organization

1445 (23.94%)

61.19 ± 7.74

10.92 (6.00, 17.67)

Others

110 (1.82%)

61.02 ± 13.34

6.45 (3.50, 10.56)

P value

-

< 0.001

< 0.001

Enterprise scale

   

Large

332 (5.50%)

57.97 ± 13.50

17.75 (9.06, 25.85)

Medium

840 (13.92%)

51.73 ± 10.55

11.25 (6.67, 19.79)

Small

4332 (71.75%)

55.91 ± 9.56

11.00 (6.67, 17.00)

Micro

25 (0.41%)

49.70 ± 8.79

7.73 (3.58, 9.08)

Unknown

508 (8.42%)

56.24 ± 10.27

11.25 (4.92, 18.94)

P value

-

< 0.001

< 0.001