Table 3.

RCVS–TCH score performance.

Total scores	Derivation set				Validation set
	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)
9	41	100	100	56	35	100	100	44
8	63	100	100	67	60	91	93	53
7	80	97	97	79	77	78	88	61
6	80	90	92	78	81	75	87	63
5	93	68	79	88	90	52	79	66
4	93	65	78	87	97	39	76	73

PPV positive predictive value, NPV negative predictive value.