Table 1 Baseline characteristics of TB cases recorded in enhanced surveillance system in Blantyre
CHW resident (N = 3723) | Non-CHW resident (N = 2354) | Total (N = 6077) | |
|---|---|---|---|
Year | |||
2015 | 994 (26.7%) | 666 (28.3%) | 1660 (27.3%) |
2016 | 1314 (35.3%) | 886 (37.6%) | 2200 (36.2%) |
2017 | 1415 (38.0%) | 802 (34.1%) | 2217 (36.5%) |
Sex | |||
Female | 1358 (36.5%) | 992 (42.1%) | 2350 (38.7%) |
Male | 2365 (63.5%) | 1362 (57.9%) | 3727 (61.3%) |
Age (mean, sd) | 35.0 (13.5) | 36.1 (16.0) | 35.4 (14.5) |
TB classification | |||
Missing | 1 | 0 | 1 |
Extrapulmonary TB | 1395 (37.5%) | 1052 (44.7%) | 2447 (40.3%) |
Pulmonary TB | 2327 (62.5%) | 1302 (55.3%) | 3629 (59.7%) |
Clinic registration sputum smear status | |||
Missing/not done | 2087 | 1437 | 3524 |
Smear negative | 618 (37.8%) | 399 (43.5%) | 1017 (39.8%) |
Smear positive | 1018 (62.2%) | 518 (56.5%) | 1536 (60.2%) |
HIV status | |||
Missing | 99 | 63 | 162 |
HIV negative | 1146 (31.6%) | 805 (35.1%) | 1951 (33.0%) |
HIV positive | 2478 (68.4%) | 1486 (64.9%) | 3964 (67.0%) |
Laboratory sputum smear status | |||
Not done/lab issue | 911 | 698 | 1609 |
Scanty positive | 18 (0.6%) | 5 (0.3%) | 23 (0.5%) |
Smear negative | 1524 (54.2%) | 1000 (60.4%) | 2524 (56.5%) |
Smear positive | 1270 (45.2%) | 651 (39.3%) | 1921 (43.0%) |
Laboratory sputum TB culture status | |||
Not done/lab issue | 1013 | 758 | 1771 |
Culture negative | 1113 (41.1%) | 808 (50.6%) | 1921 (44.6%) |
Culture positive | 1597 (58.9%) | 788 (49.4%) | 2385 (55.4%) |
Laboratory TB species | |||
Not done/lab issue | 2230 | 1625 | 3855 |
Mycobacterium tuberculosis | 1493 (100.0%) | 729 (100.0%) | 2222 (100.0%) |
Microbiologically confirmed TB | |||
Microbiologically confirmed TB | 1700 (45.7%) | 845 (35.9%) | 2545 (41.9%) |
Not microbiologically confirmed TB | 2023 (54.3%) | 1509 (64.1%) | 3532 (58.1%) |