Table 3.
Univariate and Multivariable Models of Time to Sputum Smear Conversion
| Univariate Analysis | Multivariate Analysis | |||
|---|---|---|---|---|
| Variable | HR (95% CI) | p-value | HR (95% CI) | p-value |
| Age (year) | 1.00 (0.99, 1.00) | 0.95 | - | |
| Male sex | 0.84 (0.52, 1.35) | 0.46 | - | |
| Sputum smear grade* | 0.47 (0.37, 0.59) | 0.00 | 0.45 (0.35, 0.57) | 0.000 |
| Cavitation | 0.65 (0.42, 0.99) | 0.05 | - | |
| Bilateral lung involvement | 1.08 (0.71, 1.64) | 0.73 | - | |
| Drug resistance | 1.47 (0.71, 3.05) | 0.30 | 2.30 (1.08, 4.89) | 0.03 |
| Tobacco use | 1.40 (0.91, 2.17) | 0.13 | - | |
| Alcohol abuse | 0.96 (0.63, 1.47) | 0.85 | - | |
| Diabetes mellitus | 0.79 (0.36, 1.73) | 0.56 | - | |
| HIV** infection | 1.43 (0.45, 4.54) | 0.55 | - | |
*
1+ to 4+ scale;
**
Human immunodeficiency virus