Table 3.

Performance of direct TTC assay with indirect LJ PM.

Type of assay	Indirect LJ PM		Sensitivity (%)	95% C.I.	Specificity	95% C.I.	PPV	95% C.I.	NPV	95% C.I.
Direct TTC assay	S	R
INH
S	201	2	98.5	95.4–99.6	81.8	47.8–96.8	99	96.1–99.8	75	42.8–93.3
R	3	9
RIF
S	211	1	100	97.8–100	75	21.9–98.7	99.5	97–100	100	30.1–100
R	0	3
INH + RIF
S	192	2	99	95.9–99.8	90.5	68.2–98.3	99	95.9–99.8	90.5	68.2–98.3
R	2	19