| pid | Cross-wave person identifier |
| pidp | Cross-wave person identifier (UKHLS) |
| khid | household identification number |
| kpno | person number |
| kiviolw | interview outcome prev wave |
| kivstat1 | interview status: previous waves |
| kivelig | whether permanent sample member |
| khhmem | household membership |
| knewhy | new entrants – why living in hh |
| knemnjn | new entrants – month joined hh |
| kneyrjn4 | new entrants – year joined hh |
| klvwhy | leavers – why left |
| klvmn | leavers – month left |
| klvyr4 | leavers – year left |
| klvloc | leavers – new location |
| kivfio | individual interview outcome |
| kivrref | reason for interview refusal |
| kivireis | re-issued to field |
| kfinloc | final sample location identification |
| kivfho | final household interview outcome |
| kmemorig | sample origin |
| ksampst | Sample membership status |
| kmovest | individual mover status |
| klewght | longitudinal enumerated individual weigh |
| klrwght | longitudinal respondent weight |
| klrwtsw1 | longit’l resp. weight inc scot-welsh |
| klewtsw1 | longit’l enum. weight inc. scot-welsh |
| klrwtsw2 | longit’l resp. weight only scot-welsh |
| klewtsw2 | longit’l enum. weight only scot-welsh |
| kdistmov | distance of residential move |