Table 3 Results of linear regression analysis examining the joint contribution of three behavioral predictors of autism recurrence (measured at 36-48 months) to variation in autism-related variation in early childhood reciprocal social behavior

From: Behavioral predictors of autism recurrence are genetically independent and influence social reciprocity: evidence that polygenic ASD risk is mediated by separable elements of developmental liability

Outcome modeled

Adj R2

BPAR

B

t

Sig

Δ Adj R2

SRS at 36 months

0.35

Biparental QAT

0.255

5.568

<0.001

0.06

  

Variation in attentional impairment

0.355

3.996

<0.001

0.12

  

Variation in motor coordination

−0.242

−3.830

<0.001

0.05

  

Site

.079

1.252

0.212

0.00

  1. Adjusted R square is reported for the full regression model, along with changes in adjusted R square that occur when a given individual behavioral trait is excluded from the model, and the result compared with that for the full model. A companion table for SRS outcome at 48 months (for which there were fewer twin pairs with complete data) yielded highly comparable results and is provided in Supplementary Table 2
  2. SRS social responsiveness scale
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