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Table 4 Survival submodel with slope parameterizations under Weibull accelerated failure time for DR-TB patients in Amhara region, Ethiopia

From: Time to poor treatment outcome and its predictors among drug-resistant tuberculosis patients on second-line anti-tuberculosis treatment in Amhara region, Ethiopia: retrospective cohort study

VariablesStatus
Event (%)Censored (%)CTR[95% CI]ATR[95% CI]
Age
  < =2416 (9.7)149 (90.3)1.001.00
 25–4445 (17.4)213 (82.6)0.42 [0.21 0.88]0.45 [0.14 1.84]
 45 and above25 (29.4)60 (70.6)0.18 [0.17 0.43]0.28 [0.10 0.68]
Residence
 Urban27 (11.1)216 (88.9)1.001.00
 Rural59 (22.3)206 (77.7)0.36 [0.20 0.67]0.51 [0.30 0.86]
TB complication
 Yes52 (57.1)39 (42.9)1.001.00
 No34 (8.2)383 (91.8)15 [7.59 29.72]7.65 [4.22 13.88]
Sputum smear
 Positive72 (18.0)328 (82.0)1.001.00
 Negative14 (13.0)94 (87.0)1.56 [0.75 3.27]1.23 [0.65 2.33]
Education
 No education50 (22.0)177 (78.0)1.001.00
 Primary24 (16.9)118 (83.1)1.47 [0.79 2.73]0.75 [0.41 1.36]
 Secondary and above12 (8.7)127 (91.3)3.87 [1.68 8.90]2.34 [1.34 2.88]
Anemia
 Anemic75 (24.1)236 (75.9)1.001.00
 Not anemic11 (5.6)186 (94.4)3.37 [1.35 8.41]2.58 [1.21 3.80]
HIV
 Positive30 (24.4)93 (75.6)1.001.00
 Negative56 (14.6)329 (85.4)2.15 [1.21 3.84]1.94 [1.35 2.35]
Diabetes
 Yes7 (43.7)9 (56.3)1.001.00
 No79 (16.1)413 (83.9)4.52 [1.64 12.46]3.45 [1.34 8.86]
TB treatment
 No treatment9 (12.2)65 (87.8)1.001.00
 One and above77 (17.7)370 (82.3)0.57 [0.22 1.49]0.37 [0.16 0.86]
Smoking history
 Yes18 (25.7)52 (74.231.001.00
 No68 (15.5)370 (84.5)2.05 [1.04 4.02]1.29 [1.07 2.88]
  1. CTR Crude time ratio, ATR Adjusted time ratio, TB tuberculosis, TB complication (pneumonia, hemoptysis, pneumothorax, Corpulmonale