Mothers not currently married to the biological father and those married to a twin of ethnic minority were less likely to be interviewed (p<0.001). Offspring whose fathers were not currently married to their biological mothers were less likely to be interviewed than those whose fathers were married to their biological mothers (p<0.001). The current study analyzed data from 831 offspring (from 488 fathers) aged 12 to 32 (mean (SD) =22.7 (4.4)) and data from 420 mothers.
