Table 1.
Differences between patients with and without NTM lung infection in terms of demographic, occupational, and radiological characteristics.
| Total | No Recovery of Lung NTM, n (%) | Recovery of Lung NTM, n (%) | p-Value a | |
|---|---|---|---|---|
| 1310 (94.1) | 82 (5.9) | |||
| Age, years | ||||
| 40–49 | 11 (0.8) | 3 (3.6) | 0.0052 * | |
| 50–59 | 216 (16.5) | 4 (4.9) | ||
| 60–69 | 495 (37.8) | 33 (40.3) | ||
| 70–79 | 513 (39.2) | 39 (47.6) | ||
| ≥80 | 75 (5.7) | 3 (3.6) | ||
| Work duration, years | ||||
| <10 | 273 (20.8) | 7 (8.5) | 0.0550 | |
| 10–19 | 354 (27.0) | 30 (36.6) | ||
| 20–29 | 338 (25.8) | 25 (30.5) | ||
| 30–39 | 238 (18.2) | 13 (15.9) | ||
| ≥40 | 107 (8.2) | 7 (8.5) | ||
| Gender | ||||
| Male | 1258 (96.0) | 82 (100) | 0.0659 | |
| Female | 52 (4.0) | 0 (0) | ||
| Diabetes † | ||||
| No | 749 (78.8) | 39 (72.2) | 0.2495 | |
| Yes | 201 (21.2) | 15 (27.8) | ||
| Hypertension ‡ | ||||
| No | 552 (56.2) | 30 (50) | 0. 3514 | |
| Yes | 431 (43.8) | 30 (50) | ||
| History of pulmonary tuberculosis § | ||||
| No | 905 (77.7) | 38 (60.3) | 0.0015 * | |
| Yes | 260 (22.3) | 25 (39.7) | ||
| Smoking status | ||||
| Non-smoker | 191 (21.3) | 17 (22.4) | 0.0644 | |
| Ex-smoker | 571 (63.7) | 55 (72.4) | ||
| Current smoker | 134 (15.0) | 4 (5.2) | ||
| Type of job | ||||
| Coal worker | 932 (71.2) | 68 (82.9) | 0.0214 * | |
| Other | 378 (28.9) | 14 (17.1) | ||
| Pneumoconiosis characteristics | ||||
| Profusion of small opacities | ||||
| 0 | 319 (24.4) | 9 (11.0) | <0.0001 * | |
| 1 | 456 (34.8) | 19 (23.2) | ||
| 2 | 438 (33.4) | 43 (52.4) | ||
| 3 | 97 (7.4) | 11 (13.4) | ||
| Grade of large opacities | ||||
| No | 926 (70.7) | 35 (42.7) | <0.0001 * | |
| A | 154 (11.8) | 17 (20.7) | ||
| B | 193 (14.7) | 20 (24.4) | ||
| C | 37 (2.8) | 10 (12.2) | ||
ap-values were obtained by comparing the groups using the Chi-squared test or Fisher’s exact test. * Statistically significant values (p < 0.05). † 388 missing data on diabetes. A total of 1004 subjects were included. ‡ 349 missing data on hypertension. A total of 1043 subjects were included. § 164 missing data on tuberculosis. A total of 1228 subjects were included. 420 missing data on smoking status. A total of 972 subjects were included. NTM, nontuberculous mycobacteria.