Aim 1: Does social adjustment differ across group?
There was a significant fixed effect for group, F(2, 78.93)=4.59p =.013). Evaluation of the between-group differences suggested that survivors and their siblings did not significantly differ on BASC-Social Withdrawal scores, b =2.24 (SE =2.39),t (48.89)=0.94, p =.353. Survivors did have significantly higher BASC-3 Social Withdrawal scores compared to controls,b =6.34 (SE =2.12), t (76)=3.00, p =.004. Although differences between siblings and controls did not meet the threshold for statistical significance, b =4.10 (SE =2.39),t (48.89)=1.72, p =.092, the trend suggested slightly higher scores for siblings. Together, these results suggest that survivors had poorer social adjustment compared to age- and sex-matched controls.