The bioage data file is generated using information collected in the "Mother & Child" and "Parent" questionnaires. It contains information on every child, on which at least one questionnaire has been answered by one of the parents. Each row can be identified by the ID of the child (pid), the...

The file BIOBIRTH covers the following information: (1) sum, year of birth and sex of the biological children of a male/female respondent up to the last date of interview (2) Person identifier (KIDPNR(n)) of the children (provided the child can be identified) which corresponds to variable PID in...