Table 5.

Diagnostic accuracy of the risk score for repeated consultations with FSS

Cut-off score	n	Sensitivity (95% CI)	Specificity (95% CI)	PPV (95% CI)	NPV (95% CI)
≥25	2065	0.87 (0.83 to 0.91)	0.23 (0.22 to 0.25)	0.13 (0.11 to 0.14)	0.93 (0.91 to 0.95)
≥50	1057	0.59 (0.54 to 0.65)	0.63 (0.61 to 0.64)	0.17 (0.15 to 0.19)	0.92 (0.91 to 0.94)
≥100	104	0.13 (0.10 to 0.17)	0.97 (0.97 to 0.98)	0.37 (0.29 to 0.47)	0.91 (0.90 to 0.92)

FSS, functional somatic symptoms; NPV, negative predictive value; PPV, positive predictive value.