Table 2.

Multivariate regression analyses of study variables and their effects on isoniazid concentration in patients with active tuberculosis

	Coefficient (β)	Standard error	P-value	95% confidence interval
Number of NAT2*4 allele =0	4.245	0.670	<0.001	2.920, 5.570
Number of NAT2*4 allele =1	2.037	0.491	<0.001	1.067, 3.007
Body weight, kg	−0.064	0.028	0.021	−0.119, −0.010

Abbreviation: NAT2, N-acetyltransferase 2.