TABLEĀ 4

Performance measures including sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of the PICADAR prediction tool for different cut-off values calculated from the derivation group and the validation group

Cut-off scoreDerivation groupValidation group
SensitivitySpecificityPPVNPVSensitivitySpecificityPPVNPV
0>0.99<0.010.12>0.99<0.010.510.00
1>0.990.010.121.0
2>0.990.040.121.0>0.990.010.511.00
30.970.200.140.980.990.350.610.97
40.970.480.200.990.930.630.720.90
50.900.750.320.980.860.730.770.83
60.890.830.410.980.810.760.780.79
70.760.940.630.970.730.890.790.79
80.630.960.680.950.530.900.850.65
90.340.990.820.920.350.960.900.59
100.31>0.990.800.920.290.960.880.57
110.19>0.990.720.900.250.990.960.56
120.13>0.991.00.900.130.990.930.52
130.01>0.991.00.880.05>0.991.000.50
14<0.01>0.990.880.01>0.991.000.49