BHPS Documentation and Questionnaires
Record Type negoalt
| nhid | household identification number |
| npno | ego’s person number |
| nopno | alter’s person number |
| nrel | relationship of nopno to npno |
| nsex | sex |
| nosex | alter’s sex |
| nlwstat | alter’s residence at last wave |
| nnwstat | alter’s residence at next wave |
| pid | cross-wave person identifier |
| pidp | Cross-wave person identifier (UKHLS) |
| nopid | alter’s cross-wave person identifier |