Table 3. Kappa statistic for agreement between IGRA and TST positivity (n = 265).

IGRA	TST		Total	Agreement	Kappa	95% CI	P value
	Positive	Negative
Positive	30	13	43	74.7	0.33	0.21–0.45	<0.0001
Negative	54	168	222
Total	84	181	265

IGRA = interferon-gamma release assay, TST = tuberculin skin test