Table 2 Smear microscopy profile of participants in relation to Xpert MTB/RIF CT value, MGIT TTP and LJ colony grades at baseline
Category | Smear grade | Frequency n (%) N = 138 | Baseline CT value Mean ± sd | Baseline TTP Mean ± sd, days | LJ Colony grade | ||||
|---|---|---|---|---|---|---|---|---|---|
Neg (n) | 1+ (n) | 2+ (n) | 3+ (n) | 4+ (n) | |||||
Smear positivea | Scanty | 4 (6.3) | 25.7 ± 6.6 |  19 ± 16 | 1 |   5 |   0 |   0 |   0 |
1+ | 12 (8.7) | 24.7 ± 6.9 |  13 ± 10 | 1 |   5 |   3 |   2 |   1 | |
2+ | 8 (5.8) | 23.9 ± 5.4 |   7 ± 2 | 0 |   0 |   1 |   3 |   4 | |
3+ | 24 (17.4) | 21.6 ± 5.9 |   5 ± 3 | 0 |   0 |   1 |   1 | 22 | |
Smear Negative | 87 (58.9) | 26.9 ± 5.0 |  22 ± 16 | 4 | 33 | 27 | 16 |   7 | |