Table 4.
Comparison of RBS-R scores across PWS group with SCQ <15, PWS group with SCQ ≥15 and ASD sample after controlling for covariates (age and gender)
| PWS with SCQ < 15 (L) (n = 32) | PWS with SCQ ≥ 15 (H) (n = 12) | Combined ASD (n = 207) | GLM F2,246 | p | Post-hoc (p) | |
|---|---|---|---|---|---|---|
| EMM (SE) | EMM (SE) | |||||
| Stereotyped | 0.9 (0.7) | 5.1 (1.0) | 5.7 (0.2) | 22.474 | <0.001 | L vs. H** |
| L vs. ASD*** | ||||||
| Self-injurious | 1.5 (0.8) | 2.4 (1.3) | 3.8 (0.3) | 3.617 | 0.028 | |
| Compulsive | 2.7 (1.0) | 8.2 (1.5) | 6.7 (0.4) | 8.119 | <0.001 | L vs. H** |
| L vs. ASD** | ||||||
| Ritualistic | 2.4 (0.9) | 6.4 (1.4) | 6.7 (0.3) | 10.664 | <0.001 | L vs. H* |
| L vs. ASD*** | ||||||
| Sameness | 2.4 (1.3) | 9.4 (2.1) | 11.4 (0.5) | 19.479 | <0.010 | L vs. H* |
| L vs. ASD*** | ||||||
| Restricted | 0.9 (0.6) | 2.6 (0.9) | 5.2 (0.2) | 25.717 | <0.010 | L vs. ASD*** |
| H vs. ASD* | ||||||
| Sum | 10.9 (4.1) | 34.1 (6.4) | 39.6 (1.5) | 21.257 | <0.001 | L vs. H** |
| L vs. ASD*** |
Only those with significant differences (p ≤ 0.001, presented in bold typeface) were listed in the post-hoc test column and Bonferroni’s test was used as a post-hoc procedure
L PWS group with lower total SCQ score (<15), H PWS group with higher total SCQ score (≥15), EMM (SE) estimated marginal means (standard error)
Significance for the post-hoc test was set as p < 0.05. *p < 0.05, **p < 0.01, ***p < 0.001