Table 4.
Clinical predictors of treatment success versus death and treatment failure among children and adolescents treated for rifampicin-resistant tuberculosis
| Treatment success versus unfavourable outcomes (death/treatment failure) | ||||
|---|---|---|---|---|
| Univariable logistic regression models | Multivariable logistic regression model | |||
| Clinical predictor | Crude OR (95% CI) | p-value | Adjusted OR (95% CI) | p-value |
| Upper-middle or high-income country | 1.94 (0.93–4.1) | 0.079 | - | - |
| Age (years) | 0.94 (0.93–0.95) | <0.0001 | 0.96 (0.94–0.97) | <0.0001 |
| Male sex | 0.85 (0.79–0.91) | <0.0001 | 0.84 (0.78–0.91) | <0.0001 |
| HIV positive | 0.39 (0.34–0.44) | <0.0001 | 0.42 (0.36–0.48) | <0.0001 |
| Microbiologically confirmed tuberculosis | 1.41 (1.25–1.59) | <0.0001 | - | - |
| Previous tuberculosis treatment | 0.44 (0.4–0.49) | <0.0001 | 0.52 (0.46–0.58) | <0.0001 |
| Pulmonary tuberculosis | 0.4 (0.26–0.6) | <0.0001 | 0.53 (0.34–0.81) | 0.0034 |
| Extrapulmonary tuberculosis | 1.61 (1.24–2.11) | 0.0010 | - | - |
| AFB smear positive | 0.43 (0.37–0.49) | <0.0001 | 0.46 (0.4–0.53) | <0.0001 |
- Predictor Income country: ROC-AUC 0.54 [95 % CI, 0.53 to 0.56]; Marginal R2/Conditional R2 0.02/0.32
- Predictor Age: ROC-AUC 0.58 [95 % CI, 0.57 to 0.59]; Marginal R2/Conditional R2 0.02/0.25
- Predictor Sex: ROC-AUC 0.55 [95 % CI, 0.54 to 0.56]; Marginal R2/Conditional R2 0.001/0.34
- Predictor HIV status: ROC-AUC 0.59 [95 % CI, 0.58 to 0.6]; Marginal R2/Conditional R2 0.02/0.35
- Predictor TB status: ROC-AUC 0.55 [95 % CI, 0.54 to 0.56]; Marginal R2/Conditional R2 0.002/0.38
- Predictor Any previous TB treatment: ROC-AUC 0.59 [95 % CI, 0.58 to 0.6]; Marginal R2/Conditional R2 0.02/0.32
- Predictor Pulmonary TB: ROC-AUC 0.54 [95 % CI, 0.536 to 0.0.55]; Marginal R2/Conditional R2 0.004/0.37
- Predictor Extrapulmonary TB: ROC-AUC 0.57 [95 % CI, 0.56 to 0.58]; Marginal R2/Conditional R2 0.01/0.36
- Predictor AFB smear status: ROC-AUC 0.63 [95 % CI, 0.62 to 0.64]; Marginal R2/Conditional R2 0.04/0.33
Multivariable model adjusted for the following baseline clinical characteristics: age, sex, HIV status, history of any previous tuberculosis treatment, having pulmonary disease and AFB smear positive.
Performance evaluation for multivariable model: ROC-AUC 0.67 [95 % CI, 0.66 to 0.68]; Marginal R2/Conditional R2 0.1/0.35
Note: Complete case analysis results are reported in Supplementary Table S18.
AFB, acid-fast bacilli; OR, odds ratio