Table 5: Sensitivity and specificity thresholds of SFAQ.

Score% patients needing
new
intervention
Score% patients needing
new
intervention
ThresholdSensitivitySpecificityPositive
predictive value
Negative
predictive value

038%≥154%≥10.970.180.480.88
≤145%≥248%≥20.870.280.480.73
≤240%≥351%≥30.770.410.510.7
≤331%≥454%≥40.690.540.690.54
≤435%≥555%≥50.570.630.550.66
≤537%≥657%≥60.440.740.570.63
≤639%≥763%≥70.310.860.630.61
≤742%≥870%≥80.110.960.70.58