Table V.

Calculation of diagnostic performance

Truenat Beta CoV and Truenat SARS-CoV-2 (n=75)	SARS-CoV-2 rRT-PCR (n=75)
	Positive	Negative	Total
Positive	30 (TP)	0 (FP)	30
Negative	0 (FN)	45 (TN)	45
Total	30	45	75

TP, true positive; TN, true negative; FP, false positive; FN, false negative, PPV, positive predictive value; NPV, negative predictive value. Sensitivity=TP/TP+FN; Specificity=TN/ TN+FP; PPV=TP/TP+FP; NPV=TN/TN+FN; Sensitivity: 100 per cent; Specificity: 100 per cent; PPV: 100 per cent; NPV: 100 per cent; Clinical sensitivity: 100 per cent; Clinical specificity: 100 per cent; Overall concordance: 100 per cent