Sensitivity, specificity, the positive and negative predictive value of the PEP-R DQ, K-WPPSI-IV FSIQ, and VABS-II ABC scores in participants
| Method | SN | p |
SP | PPV | NPV |
|---|---|---|---|---|---|
| Total (n=164) | |||||
| PEP-R DQ |
85.2 | N/A |
100.0 | 100.0 | 92.0 |
| K-WPPSI-IV FSIQ | 78.7 | 0.180 |
100.0 | 100.0 | 88.8 |
| VABS-II ABC scores | 68.9 | 0.013 |
100.0 | 100.0 | 84.4 |
| ASD and TD group (n=145) | |||||
| PEP-R DQ |
88.1 | N/A |
100.0 | 100.0 | 95.4 |
| K-WPPSI-IV FSIQ | 81.0 | 0.688 |
100.0 | 100.0 | 92.8 |
| VABS-II ABC scores | 76.2 | 0.125 |
100.0 | 100.0 | 91.2 |
| ID and TD group (n=148) | |||||
| PEP-R DQ |
97.8 | N/A |
100.0 | 100.0 | 99.0 |
| K-WPPSI-IV FSIQ | 93.3 | 0.039 |
100.0 | 100.0 | 97.2 |
| VABS-II ABC scores | 77.8 | 0.004 |
100.0 | 100.0 | 91.2 |
| LD and TD group (n=114) | |||||
| PEP-R DQ |
63.6 | N/A |
100.0 | 100.0 | 96.3 |
| K-WPPSI-IV FSIQ | 54.5 | N/A |
100.0 | 100.0 | 95.4 |
| VABS-II ABC scores | 54.5 | N/A |
100.0 | 100.0 | 95.4 |
| First tertile group (n=49) |
|||||
| PEP-R DQ |
87.5 | N/A |
100.0 | 100.0 | 97.6 |
| K-WPPSI-IV FSIQ | 75.0 | N/A |
100.0 | 100.0 | 95.3 |
| VABS-II ABC scores | 50.0 | N/A |
100.0 | 100.0 | 91.1 |
Values are presented as percentage. *based on the results of the Youden index analysis, the cutoff value for PEP-R DQ was estimated to be 81; †the first tertile group includes children aged below 56 months, which was obtained by dividing participants into three groups according to age; ‡exact McNemar’s test; §exact McNemar’s test was not available due to insufficient number of the participants in the discordant pairs; ǁcomparison of the SNs between the PEP-R DQ and K-WPPSI-IV FSIQ; ¶comparison of the SNs between the K-WPPSI-IV FSIQ and VABS-II ABC scores; **comparison of the SNs between the PEP-R DQ and VABS-II ABC scores. ASD, autism spectrum disorder; ID, intellectual disability; K-WPPSI-IV FSIQ, Korean Wechsler Preschool & Primary Scale of Intelligence fourth edition Full-Scale Intelligence Quotient; LD, language disorder; N/A, not available; NPV, negative predictive value; PEP-R DQ, Psychoeducational Profile-Revised Developmental Quotient; PPV, positive predictive value; SN, sensitivity; SP, specificity; TD, typical development; VABS-II ABC, Vineland Adaptive Behavior Scales second edition Adaptive Behavior Composite