From: Effect of isoniazid preventive therapy on tuberculosis incidence and associated risk factors among HIV infected adults in Tanzania: a retrospective cohort study
Characteristic
Hazards ratio (95% CI)
P-value
Ever on art (N = 56,245)
Ever on IPT
0.6 (0.5–0.7)
0.001
Never on IPT
Ref
Never on art (N = 12,133)
0.5 (0.2–1.7)
0.298