| bhid | household identification number |
| bpno | person number |
| pid | cross-wave person identifier |
| pidp | Cross-wave person identifier (UKHLS) |
| biviow1 | interview outcome wave 1 |
| bivelig | whether permanent sample member |
| bhhmem | household membership |
| bnelyr | new entrants – in hh last year? |
| bnewhy | unlisted joiners |
| bnemnjn | new entrants – month joined hh |
| bneyrjn | new entrants – year joined hh |
| bleaver | whether left household? |
| blvwhy | leavers |
| blvmn | leavers – month left |
| blvyr | leavers – year left |
| blvloc | leavers – new location |
| bivfio | individual interview outcome |
| bivrref | reason for interview refusal |
| bivcoop | extent of cooperation |
| biodc | document check |
| bivmvst | fieldwork mover status code |
| bfinloc | final sample location identification |
| bivfho | final household interview outcome |
| bsampst | sample membership status |
| bmovest | individual mover status |
| blewght | longitudinal enumerated individual weigh |
| blrwght | longitudinal respondent weight |
| bneyrjn4 | new entrants – year joined hh: 4 digit |
| blvyr4 | leavers – year left: 4 digit |
| bdistmov | distance of residential move |