Table 3.

Relationship between different concentrations of first-line anti-TB agents

	Correlation of concentration measures (r2)
	Cmax versus AUC	2 h versus Cmax	2 h versus AUC
Isoniazid	0.464	0.644	0.209
Rifampicin	0.440	0.767	0.297
Ethambutol	0.772	0.002	0.008
Pyrazinamide	0.819	0.798	0.725