From: Incidence and predictors of major adverse drug events among drug-resistant tuberculosis patients on second-line anti-tuberculosis treatment in Amhara regional state public hospitals; Ethiopia: a retrospective cohort study
Assumptions
Probability of event
Variables
Hazard ratio
Sample size
Power = 80%
Significant level (α) = 0.05
Allocation ratio 1:1
Two tailed
0.26
HIV co-infection
5.81
163
Extra-pulmonary TB
2.74
495