Of 452 African-American RCT participants, 62 percent (n=282) were genotyped; 88 percent (N=248) of this genetic sample were interviewed at age 25 (Treatment n=127; Control n=121). This analytic sample did not differ from the full African-American sample on pre-intervention severity-of-risk scores for treatment or control groups (p-values>0.670). Pre-intervention severity-of-risk score did not differ between control and treated children within the analytic sample (p=0.779).
