Table 5. The matching matrix between results of smear and machine 5-level grading for ZN stained direct smear batch.

Number of AFBs detected by system	Smear negative	Smear positive
		Scanty	1+	2+	3+
0–6	166	19	4	0	0
7–20	26	15	16	3	0
21–200	9	8	17	14	10
201–2000	0	0	8	2	11
>2000	0	0	2	0	4