Table 4 –

Statistical models of longitudinal trajectories in parental linguistic performance. The models include 395 data points, 32 parents of children with ASD and 35 parents of TD children.

	Word tokens	Word types	MLU
R2m, R2	R2m = 0.11, R2 = 0.82	R2m = 0.07, R2 = 0.77	R2m = 0.27, R2 = 0.70
Predictor
Intercept	β = 2284.70, SE = 67.43, t-stat = 33.88, p < 0.0001	β = 445.60, SE = 10.64, t-stat = 41.87, p < 0.0001	β = 3.27, SE = 0.31, t-stat = 10.52, p < 0.0001
Visit	Not Included	β = 17.17, SE = 2.01, t-stat = 8.55, p < 0.0001	β = 0.31, SE = 0.07, t-stat = 4.60, p < 0.0001
Visit2	Not Included	Not Included	β = −0.03, SE = 0.01, t-stat = −3.17, p = 0.0023
Diagnosis	Not Included	Not Included	β = −0.54, SE = 0.10, t-stat = −5.21, p < 0.0001
Mullen Visual Reception (VR)	β = 51.13, SE = 15.06, t-stat = 3.40, p = 0.0012	Not Included	β = 0.04, SE = 0.01, t-stat = 3.15, p = 0.0025
Random Effects	Child intercept SD: 547.10 Visit slope SD: 321.87 Visit2 slope SD: 38.16 Residual SD: 293.95	Child intercept SD: 87.90 Visit slope SD: 45.59 Visit2 slope SD: 5.33 Residual SD: 52.44	Child intercept SD: 0.41 Visit slope SD: 0.30 Visit2 slope SD: 0.03 Residual SD: 0.38