Table 4 Performance of culture in relation to smear microscopy (2010–2012)
Culture method | Performance indicator | 2010 N (%) | 2011 N (%) | 2012 N (%) |
|---|---|---|---|---|
LJ culture | Total (n) | 3,818 | 5,186 | 1,486 |
| Â | Culture positive (MTBc) | 69 (1.8) | 683 (13.2) | 447 (30.1) |
| Â | Culture negative | 3,749 (98.2) | 4,503 (86.8) | 1,039 (69.9) |
| Â | Culture contaminated | 70 (1.8) | 287 (5.5) | 48 (3.2) |
| Â | Smear negative among culture positive | 19 (27.54) | 255 (37.3) | 172 (38.5) |
| Â | Smear positive among culture positive | 46 (66.7) | 377 (55.2) | 264 (59.1) |
| Â | Smear positive among culture contaminated | 3 (4.3) | 54 (18.8) | 14 (29.2) |
| Â | Smear positive among culture negative | 21 (0.6) | 66 (1.5) | 72 (6.9) |
MGIT culture | Total (n) | 3,818 | 5,056 | 1,226 |
| Â | Culture positive M. tuberculosis (MTBc) | 107(2.8) | 777 (15.4) | 352 (28.7) |
| Â | Culture negative | 3,285 (86.0) | 2,705 (53.5) | 682 (55.6) |
| Â | Culture positive with MOTT | 112 (2.9) | 253 (5.0) | 55 (4.5) |
| Â | Culture contaminated | 314 (8.2) | 1,321 (26.1) | 137 (11.2) |
| Â | MOTT among smear positive | 2 (2.8) | 33 (6.6) | 14 (6.6) |
| Â | Smear negative among culture positive (MTBc) | 56 (52.3) | 575 (74.0) | 211 (60.0) |
| Â | Smear positive among culture positive (MTBc) | 62 (57.9) | 452 (58.2) | 195 (55.4) |
| Â | Smear positive among culture contaminated | 0 (0.0) | 23 (1.7) | 5 (3.6) |
| Â | Smear positive among culture negative | 8 (0.2) | 23 (0.8) | 12 (1.7) |