Variable | Radiograph n(%) | PF n(%) | BP n(%) | ECG n(%) |
---|---|---|---|---|
Sex | ||||
Female | 12 (1.2) | 95 (9.2) | 128 (12.4) | 179 (17.4) |
Male | 228 (2.3) | 1026 (10.2) | 3091 (30.8) | 2297 (22.9) |
Age, years | ||||
≤ 30 | 17 (1.2) | 136 (9.5) | 191 (13.4) | 295 (20.7) |
31–40 | 18 (0.7) | 256 (10.4) | 545 (22.1) | 494 (20.1) |
41–50 | 92 (2.3) | 357 (8.8) | 1243 (30.6) | 879 (21.6) |
> 50 | 113 (3.6) | 372 (12.0) | 1240 (40.0) | 808 (26.0) |
Years of dust exposure | ||||
≤ 10 | 63 (1.3) | 396 (8.4) | 1009 (21.4) | 957 (20.3) |
11–20 | 17 (0.7) | 158 (6.4) | 749 (30.5) | 477 (19.5) |
> 20 | 160 (4.1) | 567 (14.5) | 1461 (37.5) | 1042 (26.7) |
Smoking | ||||
No | 108 (2.0) | 533 (9.8) | 1614 (29.7) | 1221 (22.5) |
Yes | 132 (2.3) | 588 (10.4) | 1605 (28.5) | 1255 (22.3) |
Drinking | ||||
No | 86 (2.2) | 392 (9.9) | 1183 (29.9) | 886 (22.4) |
Yes | 154 (2.2) | 729 (10.3) | 2036 (28.6) | 1590 (22.4) |
Working types | ||||
Ground auxiliary | 102 (1.8) | 382 (6.8) | 1611 (28.6) | 1022 (18.2) |
Tunneling | 28 (1.6) | 276 (15.7) | 514 (29.3) | 472 (26.9) |
Coal extraction | 33 (3.6) | 135 (14.7) | 268 (29.2) | 183 (19.9) |
Pulverized coal | 42 (2.8) | 150 (9.9) | 438 (28.8) | 492 (32.4) |
Underground auxiliary | 35 (2.8) | 178 (14.4) | 388 (31.4) | 307 (24.9) |
Size of mine | ||||
Large | 165 (2.2) | 770 (10.5) | 2079 (28.2) | 1576 (21.4) |
Medium | 57 (2.3) | 247 (10.1) | 728 (29.8) | 556 (22.8) |
Small | 18 (1.4) | 104 (8.3) | 412 (33.0) | 344 (27.5) |