A data frame with 1743 observations on the following 12 variables.
momagemother's age at birth.
gender0 if male, 1 if female.
childagechild's age at first interview.
hispanic1 if child is Hispanic, 0 if not.
black1 if child is black, 0 if not.
momwork1 if mother works, 0 if not.
married1 if parents are married, 0 if not.
timeoccasion of observation.
antia measure of antisocial behavior measured on a scale from 0 to 6.
selfa measure of self-esteem measured on a scale from 6 to 24.
pova time varying variable assuming value 1 if family is in poverty, 0 if not.
idsubject id.