| ohid | Household identification number |
| opno | Person number |
| ohgr2r | Relationship to reference person |
| ohgsex | Sex – HH grid |
| ohgbm | Month of birth – HH grid |
| ohgby | Year of birth – HH grid |
| omastat | Marital status |
| ohgspn | PNO of spouse/partner |
| ohgemp | Employment status – HH Grid |
| ohgfno | PNO of father |
| ohgmno | PNO of mother |
| ohgra | Responsible adult |
| pid | Cross-wave person identifier |
| pidp | Cross-wave person identifier (UKHLS) |
| oiviolw | Interview outcome prev wave |
| oivstat1 | Interview status: previous waves |
| ohhmem | Household membership |
| onewhy | New entrants – why living in HH |
| onemnjn | New entrants – month joined HH |
| oneyrjn4 | New entrants – year joined HH |
| oivfio | Individual interview outcome |
| oivfho | Final household interview outcome |
| oiodc | Individual document check |
| omemorig | Sample Origin |
| oage | Age at Date of Interview |
| oage12 | Age at 1.12.2005 |
| obutype | Benefit Unit Type |
| obuno | Benefit Unit Number |
| onchild | Number of own children in household |
| odepchl | Whether dependent child: DSS definition |
| ohoh | Conventional Head of Household Indicator |
| orach16 | Whether responsible adult for child |
| oagei | Imputation flag – OAGE and OAGE12 |
| olrwght | Longitudinal respondent weight |
| olewght | Longitudinal enumerated individual weight |
| oxrwght | X-sectional respondent weight |
| oxewght | X-sectional enumerated individual weight |
| omovest | Individual mover status |
| osampst | Sample membership status |
| oxrwtuk1 | X-sect’l resp. weight inc all samples |
| oxewtuk1 | X-sect’l enum. weight inc all samples |
| oxrwtuk2 | X-sect’l resp. weight within UK estimates |
| oxewtuk2 | X-sect’l enum. weight within UK estimates |
| olrwtsw1 | Longit’l resp. weight inc Scot-Welsh |
| olewtsw1 | Longit’l enum. weight inc. Scot-Welsh |
| olrwtsw2 | Longit’l resp. weight only Scot-Welsh |
| olewtsw2 | Longit’l enum. weight only Scot-Welsh |
| olrwtuk1 | Longit’l resp. weight inc all samples |
| olewtuk1 | Longit’l enum. weight inc all samples |
| olrwtuk2 | Longit’l resp. weight within UK estimates |
| olewtuk2 | Longit’l enum. weight within UK estimates |
| osppid | Cross-wave person identifier of spouse |
| ofpid | Cross-wave person identifier of father |
| ompid | Cross-wave person identifier of mother |
| orapid | X-wave person identifier of resp. adult |
| odistmov | Distance of residential move |
| obuid | BU identifier |
| oecstat1 | Econ.Status BU (HBAI defn), i |
| oecstat2 | Econ.Status BU (HBAI defn), ii |
| ofamtype1 | BU type (HBAI defn) |
| ofamtype2 | Family type – new HBAI definition |
| obutype_mod | benefit unit type |