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Table 3 Test characteristics of SDQ, SAHA and K-SADS psychotic experiences scores predicting any, externalizing or internalizing psychiatric disorder (n = 152)

From: School-based screening for psychiatric disorders in Moroccan-Dutch youth

  Diagnostic performance Optimal cut-off1 Sensitivity Specificity
  AUC (95 % CI) Score (abnormal range) % %
Any disorder     
 SDQ self report; total difficulties 0.79 (0.70 – 0.88) 10 (10–40)2 85 65
 SDQ teacher report; total difficulties 0.82 (0.72 – 0.92) 15 (15 – 40)3 80 84
 SDQ self/teacher report; total difficulties 0.86 (0.77 – 0.94) 26 (26 – 80) 85 80
 SAHA; total internalizing symptoms 0.67 (0.53 – 0.81) 25 (25 – 40) 60 79
 K-SADS; psychotic experiences 0.74 (0.62 – 0.86) 5 (5 – 16) 70 76
Externalizing disorder     
 SDQ self report; total difficulties 0.77 (0.67 – 0.87) 10 (10 – 40) 85 63
 SDQ teacher report; total difficulties 0.93 (0.88 – 0.97) 16 (16 – 40) 100 84
 SDQ self/teacher report; total difficulties 0.92 (0.87 – 0.97) 26 (26 – 80) 100 79
 SAHA; total internalizing symptoms 0.52 (0.36 – 0.69) 25 (25 – 40) 39 75
 K-SADS; psychotic experiences 0.73 (0.59 – 0.87) 5 (5 – 16) 69 74
Internalizing disorder     
 SDQ self report; total difficulties 0.77 (0.62 – 0.91) 10 (10 – 40) 86 61
 SDQ teacher report; total difficulties 0.58 (0.38 – 0.77) 15 (15 – 40) 43 76
 SDQ self/teacher report; total difficulties 0.68 (0.50 – 0.87) 30 (30 – 80) 57 80
 SAHA; total internalizing symptoms 0.90 (0.85 – 0.96) 33 (33 – 40) 86 86
 K-SADS; psychotic experiences 0.71 (0.51 – 0.91) 5 (5 – 16) 71 72
  1. 1Optimal cut-off points are based on the cut-off point extending the highest towards the upper left corner of the ROC curve
  2. 2Recommended abnormal range of self-report total difficulties scale of the SDQ in the UK is 18–40 [35]
  3. 3Recommended abnormal range of teacher-report total difficulties scale of the SDQ in the UK is 16–40 [35]