Diagnostic Yield of Fluorescence and Ziehl-Neelsen Staining Techniques in the Diagnosis of Pulmonary Tuberculosis: A Comparative Study in a District Health Facility

Table 2

Correlation of fluorescence and ZN staining techniques with Xpert MTB/Rif.

Staining Technique	XPERT MTB/Rif		Kappa	P-value	PPV (%)	NPV (%)
	Positive	Negative
Fluorescence
Positive	71 (84.5)	0 (0.0)	0.864	p≤0.001	100	92.1
Negative	13 (15.5)	116 (100)
ZN
Positive	46 (54.8)	0 (0.0)	0.584	p≤0.001	100	77.3
Negative	38 (45.2)	116 (100)

Data is represented in raw figures and percentages. P-value is statistically significant if p < 0.05 as compared between Xpert MTB/Rif and fluorescence microscopy, Xpert MTB/Rif and ZN.