Table 4.

Results for statistical analysis of intertest agreement using Standard-of-Care MGIT as the reference test.

	Comparisons to reference standard SOC MGIT a
	Positive % agreement	Negative % agreement	Overall % agreement	kappa	Strength	95% CI	p*
OM-S MGIT	87	90	88	0.766	Substantial	0.637–0.895	0.070
OM-S LJ	85	89	87	0.744	Substantial	0.612–0.876	0.009
SOC LJ	84	88	86	0.723	Substantial	0.585–0.862	0.096
OM-S Xpert	74	93	89	0.676	Substantial	0.457–0.894	0.131
SOC Xpert	81	95	92	0.678	Substantial	0.579–0.958	0.074

CI = confidence interval; LJ = Lowenstein-Jensen culture; MGIT = mycobacteria growth indicator tube; OM-S = OMNIgene·SPUTUM; SOC = standard-of-care.

^aSamples that were contaminated in SOC MGIT were excluded from the analysis (i.e., n = 95 for culture test comparisons, n = 65 for Xpert test comparisons).

^*Values for Chi-square testing; the only significant p value is bolded.