Clinical Evaluation of COBAS TaqMan PCR for the Detection of Mycobacterium tuberculosis and M. avium Complex

Table 4

M. tuberculosis, M. avium, and M. intracellulare PCR positivity rates according to fluorescent staining from Jan 2005 to Mar 2007.

Fluorescent staining	M. tuberculosis				M. avium				M. intracellulare
	PCR+	No	%	𝑃^∗	PCR+	No	%	𝑃^∗	PCR+	No	%	𝑃^∗
—	12	18	66.7	0.61	4	7	57.1	0.84	10	12	83.3	0.12
1+	10	12	83.3	0.83	4	4	100	1.00	7	9	77.8	0.21
2+	22	23	95.7	0.36	7	7	100	0.78	14	15	93.3	0.98
3+	21	21	100	1.00	3	3	100	1.00	7	7	100	1.00
Total	65	74	87.8		18	21	85.7		38	43	88.4

G: gaffky scale.
∗ PCR positivity was compared with the corresponding columns in Tables 1–3.