Table 3.
Results of the generalized linear regression model testing the relationship between profile group and mean frequency of vocalizations.
| Modes | Coefficients |
|||||
|---|---|---|---|---|---|---|
| Estimate | SE | t | Significance code | F | p | |
| Vocalizations | ||||||
| Groups | 19.4 | < .0001 | ||||
| SMI-LCI vs. ANAR | 52.6 | 6.55 | 8.04 | *** | < .0001 | |
| SMI-LCT vs. ANAR | 47.57 | 7.66 | 6.21 | *** | < .0001 | |
| SMI-LCT vs. SMI-LCI | –5.03 | 9.15 | –0.55 | .59 | ||
| Vocalizations + gestures | ||||||
| Groups | 12.4 | < .0001 | ||||
| SMI-LCI vs. ANAR | 4.93 | 1.7 | 2.91 | ** | .0061 | |
| SMI-LCT vs. ANAR | 2.33 | 1.01 | 2.31 | * | .0265 | |
| SMI-LCT vs. SMI-LCI | –2.6 | 1.97 | –1.32 | .2004 | ||
| Gestures | ||||||
| Groups | 3.35 | .0458 | ||||
| SMI-LCI vs. ANAR | 1.93 | 0.97 | 2 | .053 | ||
| SMI-LCT vs. ANAR | –0.5 | 0.71 | –0.71 | .484 | ||
| SMI-LCT vs. SMI-LCI | –2.43 | 0.88 | –2.75 | * | .0113 | |
Note. SMI-LCI = children with speech motor impairment and language comprehension impairment; ANAR = children who have anarthria and are unable to speak; SMI-LCT = children with speech motor impairment and typical language comprehension. Degrees of freedom: ANAR as the reference group: 2, 37; SMI-LCI as the reference group: 1, 23.
Significance codes: *0.01; **0.001; ***0.