Skip to main content

Table 2 Performance of the STEPP in predicting PTSD at 3 months, at different cut-off scores

From: Predicting posttraumatic stress disorder in children and parents following accidental child injury: evaluation of the Screening Tool for Early Predictors of Posttraumatic Stress Disorder (STEPP)

Cut-off Sensitivity (95% CI) Specificity (95% CI) PPV (95% CI) NPV (95% CI)
Child diagnosis (ADIS-C/P)     
2 0.82 (0.57-0.96) 0.28 (0.20-0.36) 0.13 (0.07-0.21) 0.92 (0.79-0.98)
3 0.65 (0.38-0.86) 0.62 (0.53-0.70) 0.18 (0.09-0.30) 0.93 (0.85-0.97)
4 0.41 (0.19-0.67) 0.87 (0.80-0.92) 0.29 (0.13-0.51) 0.92 (0.86-0.96)
Child self-report (CRIES)     
2 0.87 (0.66-0.97) 0.29 (0.21-0.38) 0.19 (0.12-0.28) 0.92 (0.79-0.98)
3 0.61 (0.39-0.80) 0.62 (0.53-0.71) 0.23 (0.13-0.36) 0.89 (0.81-0.95)
4 0.43 (0.23-0.65) 0.89 (0.82-0.94) 0.43 (0.23-0.65) 0.89 (0.82-0.94)
Parent self-report (IES-R)     
2 0.92 (0.64-0.99) 0.21 (0.14-0.30) 0.11 (0.06-0.19) 0.96 (0.81-0.99)
3 0.54 (0.25-0.81) 0.57 (0.48-0.66) 0.12 (0.05-0.23) 0.92 (0.84-0.97)
4 0.23 (0.05-0.54) 0.88 (0.81-0.93) 0.17 (0.04-0.41) 0.91 (0.85-0.96)
  1. STEPP - Screening Tool for Early Predictors of PTSD, PTSD - Posttraumatic Stress Disorder, AUC - Area Under the Curve, CI - Confidence Interval, PPV - Positive Predictive Value, NPV - Negative Predictive Value, ADIS - Anxiety Disorders Interview Schedule-Child/Parent, CRIES - Children’s Revised Impact of Event Scale, IES-R - Impact of Event Scale-Revised.