| pid | Cross-wave person identifier |
| pidp | Cross-wave person identifier (UKHLS) |
| ehid | household identification number |
| epno | person number |
| eiviow4 | interview outcome wave 4 |
| eivievr | ever interviewed |
| eivelig | whether permanent sample member |
| ehhmem | household membership |
| enewhy | unlisted joiners |
| enemnjn | new entrants – month joined hh |
| eneyrjn | new entrants – year joined hh |
| elvwhy | leavers |
| elvmn | leavers – month left |
| elvyr | leavers – year left |
| elvloc | leavers – new location |
| eivfio | individual interview outcome |
| eivrref | reason for interview refusal |
| eivireis | re-issued to field |
| efinloc | final sample location identification |
| eivfho | final household interview outcome |
| esampst | sample membership status |
| emovest | individual mover status |
| elewght | longitudinal enumerated individual weigh |
| elrwght | longitudinal respondent weight |
| eneyrjn4 | new entrants – year joined hh: 4 digit |
| elvyr4 | leavers – year left: 4 digit |
| edistmov | distance of residential move |