| hhid | Household identification number |
| hfid | Fieldwork household identifier |
| hivnadd | Household found at new address in field |
| hivia | Interviewer area |
| hivid | Interviewer number |
| hivlnc | Total calls at last known address |
| hivtnc | Number of calls at new address |
| hiviam | Area intrvw took place non-local movers |
| hivfho | Final household interview outcome |
| hivosmrh | No. OSMs – whole HH refusal to intervwr |
| hivnsmrh | No. new HH membs – whl HH ref to intvwr |
| hivrrefh | Reason for household refusal |
| hivisst | Coversheet issue status |
| hivconv | Refusal conversion attempted |
| hivreis | Re-issued to field |
| hhhdc | Document check – h/hold quest’re comp? |
| hhhorig | Sample Origin: original BHPS or ECHP |
| hxhwght | Household Weight |
| hregion | Region / Metropolitan area |
| hhhmove | Mover household indicator |
| ahid | Household identification number – Wave 1 |
| hxhwghte | ECHP Household weight |
| hstrata | Stratification class |
| hpsu | Primary Sampling Unit |
| hregion2 | Government Office Region |