BHPS Documentation and Questionnaires
Record Type bchildnt
| bhid | household identification number |
| bpno | person number |
| blchbm | month of birth – natural child |
| blchby | year of birth – natural child |
| blchsx | sex of natural child |
| blchlv | natural child still lives in resp. hh |
| blchyd | year natural child died |
| blchal | age natural child left resp. hh |
| blncno | natural child number |
| blchby4 | year of birth – natural child: 4 digit |
| blchyd4 | year natural child died: 4 digit |
| pid | cross-wave person identifier |
| pidp | Cross-wave person identifier (UKHLS) |