Forest plots of odds ratios and 99% confidence intervals for risk of outcomes of interest at age 10 years associated with left-hand preference (left panels) and mixed hand preference (right panels) relative to children with right-hand preference.
Part A: Odds of z scores ≤ −2 on each DAS-II, OWLS, WIAT-III, and NEPSY-II assessment.
Part B: Odds of positive screens for behavior problems on the CSI-4 and for an ASD diagnosis at age 10 years.
Analyses were adjusted for mother’s age < 21 years at delivery, gestational age category 23–24 weeks, birth weight Z-score < −2, and male sex. Large black dots indicate that the odds ratios are significantly >1 (p < 0.01), as does the lower bound of the confidence interval to the right of the vertical line.