Table 2. Comparison of Resistance Profiles, as Predicted by Different Susceptibility Tests.
| Characteristic | No. (%) of isolates | Pa | ||||
|---|---|---|---|---|---|---|
| MBBacTa | Proportiona | MODSa | MODS vs MBBact | MODS vs proportion | MBBact vs proportion | |
| Total tested for drug resistance | 91 (100) | 93 (100) | 91 (100) | |||
| Fully susceptible isolates | 67 (73.6) | 78 (83.9) | 78 (85.7) | |||
| Any resistance | 24 (26.4) | 15 (16.1) | 13 (14.3) | .002 | NS | .007 |
| Any rifampicin | 9 (9.9) | 10 (10.8) | 8 (8.8) | NS | NS | NS |
| Any isoniazid | 18 (19.8) | 12 (12.9) | 10 (11.0) | .008 | NS | .034 |
| Any ethambutol | 15 (16.5) | 3 (3.2) | 5 (5.5) | .003 | .083 | <.001 |
| Multidrug resistance | 9 (9.9) | 7 (7.5) | 6 (6.6) | NS | NS | NS |
| Only rifampicin and isoniazid | 2 (2.2) | 4 (4.3) | 3 (3.3) | NS | NS | NS |
| Rifampicin, isoniazid, and ethambutol | 7 (7.7) | 3 (3.2) | 3 (3.3) | .083 | NS | .046 |
NOTE. Data are no. (%) of the isolates tested for resistance, unless otherwise indicated. MODS, microscopic observation drug susceptibility; NS, nonsignificant.
a
The MBBacT drug susceptibility test was not performed for 2 patients; the MODS drug susceptibility test was not performed for 2 different patients.
b
P values were obtained from the McNemar test of marginal homogeneity. P values >.10 are denoted as NS.