Table 3.

Multivariate regression model of the independent association of various variables with exposure to rifampin^a

Variable	Proportional difference	CI	P valued
Tmax (6 h)	0.71b	0.55–0.93	0.012
Sex (female)	1.91c	1.42–2.56	<0.001
Rifampin dose received	1.05	0.96–1.14	0.299
Comorbidity
HIV	0.98	0.71–1–37	0.926
DM	0.99	0.71–1.37	0.931

^aThe model was considered based on the natural logarithm of the C_max values. The proportional difference was calculated as the exponential of the coefficient obtained for each variable in the multivariate model.

^bFor interpretations of the proportional difference, C_max levels in slow absorbers were 29% lower than C_max levels in fast absorbers.

^cFor interpretations of the proportional difference, C_max levels in women were 91% higher than those in men.

^dBoldface indicates significant difference.