Number of Natural Teeth and Oral Impacts: A Study on Sri Lankan Adults

Table 2

Diagnostic performance of 24/25 natural teeth in detecting those with/without oral impacts in 40–59 year olds.

No. of teeth	Oral impacts			Sn	Sp	PPV	NPV
Cutoff	With	Without	Total
≤24	73	93	166	0.69	0.70	0.87	0.44
≥25	31	208	239
Total	104	301	405

Sn: sensitivity; Sp: specificity; PPV: positive predictive value; NPV: negative predictive value.