| ANOVA | Post hoc Tukey’s tests |
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| | | | Class 2 vs. class 1 | Class 3 vs. class 1 | Class 3 vs. class 2 |
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|
F
| dof |
p
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t
|
p
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t
|
p
|
t
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p
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ADOS at 36m1 |
CSS-Tot | 1.77 | 2/232 | 0.17 | – | – | – | – | – | – |
CSS-SA | 1.04 | 2/232 | 0.35 | – | – | – | – | – | – |
CSS-RRB | 2.15 | 2/232 | 0.12 | – | – | – | – | – | – |
ADI-R at 36m2 |
ADI-Comm3 | 9.56 | 2/236 | < 0.001* | − 4.25 | < 0.001* | − 3.97 | < 0.001* | − 0.42 | 0.91 |
ADI-Soc3 | 13.0 | 2/236 | < 0.001* | − 5.04 | < 0.00* | − 4.39 | < 0.001* | 0.01 | 1.00 |
ADI-RBI4 | 5.32 | 2/236 | 0.005* | − 2.79 | 0.015* | − 3.23 | 0.004* | − 1.28 | 0.40 |
SCQ at 36m2 |
SCQ-Tot3 | 11.2 | 2/236 | < 0.001* | − 4.40 | < 0.001* | − 4.53 | < 0.001* | 0.50 | 0.50 |
- This table shows the detailed statistics from the ANOVA-investigated differences between classes in symptom severity at 36 months as measured by the ADOS, ADI-R, and SCQ. When differences were significant, post hoc Tukey’s tests for multiple comparisons were performed for paired comparisons of classes. Differences were considered significant for p < 0.05 (marked as “*”)
- ANOVA analysis of variance, Class 1 decreasing adaptive behaviour, Class 2 average/stable adaptive behaviour, Class 3 recovering adaptive behavior, dof degrees of freedom, ADOS Autism Diagnostic Observation Schedule, CSS Calibrated Severity Score, ADI-R Autism Diagnostic Interview-Revised, SCQ Social Communication Questionnaire
- 1Data were available for a subsample of n = 235 infants
- 2Data were available for a subsample of n = 239 infants
- 3Significant difference per class with p < 0.001
- 4Significant difference per class with p < 0.05