Table 2.
Results of the multiple linear regression analyses using child characteristics as predictors of ASD instrument thresholds (SRS, ADI-R and ADOS)
| SRS Raw | ADI-R Current | ADOS Raw | ||||
|---|---|---|---|---|---|---|
| Child characteristics | B | (95% CI) | B | (95% CI) | B | (95% CI) |
| IQ (NVIQ) | −0.50*** | (−0.68,−0.31) | −0.08* | (−0.14,−0.01) | −0.03 | (−0.06,0.01) |
| Parent-rated EBP | ||||||
| CBCL-Internalizing | 1.08*** | (0.68,1.48) | 0.22*** | (0.09,0.34) | −0.05 | (−0.11,0.01) |
| CBCL-Externalizing | 1.00*** | (0.62,1.38) | 0.13* | (0.02,0.25) | 0.02 | (−0.03,0.07) |
| Clinician-observed EBPa |
−0.05 | (−4.85,4.75) | 0.53 | (−0.99,2.05) | 0.89* | (0.17,1.62) |
| Sex (female) | −6.17 | (−14.21,1.88) | −1.53 | (−3.92,0.86) | −0.90 | (−2.02,0.23) |
| Age (years) | −0.43 | (−1.96,1.11) | −1.02*** | (−1.49,−0.55) | −0.19 | (−0.41,0.03) |
| Constant | 75.58*** | (70.76,80.40) | 14.27*** | (12.62,15.93) | 4.99*** | (4.27,5.70) |
| R2 | 0.53 | 0.29 | 0.16 | |||
| n (all non-ASD) | 142 | 163 | 163 | |||
Note: NVIQ=nonverbal IQ, CBCL=Child Behavior Checklist, EBP=emotional/behavioral problems, SRS=Social Responsiveness Scale, ADI-R=Autism Diagnostic Interview-Revised, ADOS=Autism Diagnostic Observation Schedule.
a
ADOS “Other Abnormal Behaviors” section total. The SRS was included for children aged ≥4y.
*
p<0.05,
**
p<0.01,
***
p<0.001 (raw p values).