Risk factors for treatment failure of drug-resistant pulmonary tuberculosis: results from a two-decade data analysis.

In univariate Firth’s logistic regression analysis, low BMI (<18 kg/m 2 ) was significantly associated with the outcome in Period I (OR =14.49; 95% CI: 2.56–112.73; P=0.002) and Period III (OR =7.86; 95% CI: 1.64–46.19; P=0.009), whereas the association in Period II did not reach statistical significance (OR =3.10; 95% CI: 0.63–19.86; P=0.17) ( Table S6 ).

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