TABLE 1.
Characteristics of population and of sample laboratory results with proportion of Mycobacterium culture results by characteristic
| Characteristic | Total (n = 1408) n (%) | MTB culture-positive (n = 884, 59.9) n (%) | MTB culture no growth (n = 474, 33.7) n (%) | Other* = n (50, 3.6) n (%) |
|---|---|---|---|---|
| Age group, years | ||||
| 0–4 | 40 (2.8) | 11 (27.5) | 27 (67.5) | 2 (5.0) |
| 5–14 | 77 (5.5) | 43 (55.8) | 30 (39.0) | 4 (5.2) |
| 15–24 | 304 (21.6) | 213 (70.1) | 81 (26.6) | 10 (3.3) |
| 25–34 | 341 (24.2) | 217 (63.6) | 112 (32.8) | 12 (3.5) |
| 35–44 | 198 (14.1) | 121 (61.1) | 70 (35.4) | 7 (3.5) |
| 45–54 | 133 (9.4) | 80 (60.2) | 50 (37.6) | 3 (2.3) |
| 55–64 | 66 (4.7) | 46 (69.7) | 18 (27.3) | 2 (3.0) |
| ⩾65 | 16 (1.1) | 10 (62.5) | 6 (37.5) | 0 (0.0) |
| Missing | 233 (16.5) | 143 (61.4) | 80 (34.3) | 10 (4.3) |
| Sex | ||||
| Male | 566 (40.2) | 349 (61.7) | 198 (35.0) | 19 (3.4) |
| Female | 610 (43.3) | 393 (64.4) | 196 (35.0) | 21 (3.4) |
| Missing | 232 (16.5) | 142 (61.2) | 80 (34.5) | 10 (4.3) |
| Province | ||||
| NCD/Central | 590 (41.9) | 406 (68.8) | 163 (27.6) | 21 (3.6) |
| Western | 461 (32.7) | 292 (63.3) | 155 (33.6) | 14 (3.0) |
| Gulf | 149 (10.6) | 71 (47.7) | 71 (47.7) | 7 (4.7) |
| Other provinces† | 208 (14.8) | 115 (55.3) | 85 (40.9) | 8 (3.8) |
| Site | ||||
| Pulmonary (sputum) | 1258 (89.3) | 790 (62.8) | 421 (33.5) | 47 (3.7) |
| Extrapulmonary | ||||
| Lymph node aspirates | 94 (6.7) | 54 (57.4) | 39 (41.5) | 1 (1.1) |
| Gastric aspirates | 25 (1.8) | 5 (20.0) | 20 (80.0) | 0 (0.0) |
| CSF | 8 (0.6) | 3 (37.5) | 5 (62.5) | 0 (0.0) |
| Pleural fluid | 8 (0.6) | 2 (25.0) | 6 (75.0) | 0 (0.0) |
| Ascitic fluid | 5 (0.4) | 0 (0.0) | 5 (100.0) | 0 (0.0) |
| Other aspirates | 9 (0.6) | 5 (55.6) | 3 (33.3) | 1 (11.1) |
| AFB smear result | ||||
| AFB-negative | 238 (16.9) | 88 (37.0) | 142 (59.7) | 8 (3.4) |
| AFB-positive | 384 (27.3) | 315 (82.0) | 54 (14.1) | 15 (3.9) |
| Missing | 784 (55.7) | 481 (61.4) | 278 (35.5) | 25 (3.2) |
| Xpert MTB | ||||
| Negative | 161 (11.4) | 12 (7.5) | 138 (85.7) | 11 (6.8) |
| Positive | 1247 (88.6) | 872 (69.9) | 336 (26.9) | 39 (3.1) |
| Xpert RIF resistance | ||||
| Not detected | 147 (10.4) | 89 (60.5) | 53 (36.1) | 5 (3.4) |
| Detected | 1070 (76.0) | 773 (72.2) | 263 (24.6) | 34 (3.2) |
| Indeterminate | 30 (2.1) | 10 (33.3) | 20 (66.7) | 0 (0.0) |
* Non-tuberculous mycobacteria, contaminants, no test.
† Madang, Milne Bay, Morobe, Oro, East Sepik, West Sepik, Enga, Eastern Highlands, Hela, Jiwaka, Western Highlands, Southern Highlands, Autonomous Region of Bougainville, East New Britain, West New Britain and Sandaun.
MTB = Mycobacterium tuberculosis; NCD = National Capital District; CSF = cerebospinal fluid; AFB = acid-fast bacilli; RIF = rifampicin.