Table 2.
Mean Scores on the RBS-R Subscales and Factor Scores by Diagnostic Group for Cross-sectional Cohort
| AUT (n = 128) |
PDD-NOS (n = 46) |
DD (n = 44) |
TD (n = 59) |
F1 | |
|---|---|---|---|---|---|
| Lam & Aman (2007) Algorithm | |||||
| Stereotyped Behavior M ± SD | 8.90±4.94a | 7.33±5.80 a,b | 4.36±5.09b | 0.47±1.10c | 48.26 |
| Range (Min, Max) | (0, 23) | (0, 23) | (0, 26) | (0, 5) | |
| Self-Injurious Behavior M ± SD | 2.40±3.24a | 2.24±3.11a | 1.41±2.29a,b | 0.51±1.60b | 6.80 |
| Range (Min, Max) | (0, 16) | (0, 16) | (0, 10) | (0, 11) | |
| Compulsive Behavior M ± SD | 2.98±3.26a | 3.65±3.45a | 1.32±2.29b | 0.49±1.21b | 15.67 |
| Range (Min, Max) | (0, 15) | (0, 14) | (0, 10) | (0, 7) | |
| Ritualistic/Sameness Behavior M ± SD | 4.91±4.99a | 6.80±5.48a | 3.75±5.10a,b | 1.07±2.22b | 14.85 |
| Range (Min, Max) | (0, 23) | (0, 23) | (0, 21) | (0, 11) | |
| Restricted Behavior M ± SD | 2.95±2.55a | 3.37±2.32a | 1.73±1.97b | 0.54±0.90b | 21.43 |
| Range (Min, Max) | (0, 9) | (0, 8) | (0, 9) | (0, 4) | |
| Mirenda et al. (2010) Algorithm | |||||
| Repetitive Sensory Motor (RSM) M ± SD | 10.08±5.45a | 9.06±6.40a | 5.20±5.63a | 0.78±1.37b | 49.14 |
| Range (Min, Max) | (1, 25) | (1, 24) | (0, 29) | (0, 5) | |
|
| |||||
| Insistence on Sameness (IS) M ± SD | 12.63±10.85a,b | 15.59±11.13a | 7.64±10.31b,c | 2.81±4.33c | 19.45 |
| Range (Min, Max) | (0, 55) | (0, 55) | (0, 45) | (0, 19) | |
Note. AUT=autism; PDD-NOS=pervasive developmental disorder-not otherwise specified; DD=non spectrum developmental delay; TD=typical development. Superscripts denote means that differ significantly at p < 0.01.
The Mirenda et al. (2010) SIB subscale is identical to the Lam & Aman (2007) Self Injurious Behavior subscale and was therefore excluded.
1
Overall mean differs significantly at p < 0.01.