| ahid | household identification number |
| apno | person number |
| aficode | income receipt code |
| anfr | number of income receipts totalled here |
| afrall | received payment each month |
| afr01 | payment received in september 1990 |
| afr02 | payment received in october 1990 |
| afr03 | payment received in november 1990 |
| afr04 | payment received in december 1990 |
| afr05 | payment received in january 1991 |
| afr06 | payment received in february 1991 |
| afr07 | payment received in march 1991 |
| afr08 | payment received in april 1991 |
| afr09 | payment received in may 1991 |
| afr10 | payment received in june 1991 |
| afr11 | payment received in july 1991 |
| afr12 | payment received in august 1991 |
| afr13 | payment received in september 1991 |
| afr14 | payment received in october 1991 |
| afr15 | payment received in november 1991 |
| afr16 | payment received in december 1991 |
| afrnow | is still receiving payment |
| afrval | last amount received |
| afrw | weeks covered by last amount received |
| afrjt | last payment: sole or joint recipient |
| afrjtpn | pno of joint recipient |
| afiseq | income receipt sequence number |
| afim09l | estimated income in september 1990 |
| afim10l | estimated income in october 1990 |
| afim11l | estimated income in november 1990 |
| afim12l | estimated income in december 1990 |
| afim01t | estimated income in january 1991 |
| afim02t | estimated income in february 1991 |
| afim03t | estimated income in march 1991 |
| afim04t | estimated income in april 1991 |
| afim05t | estimated income in may 1991 |
| afim06t | estimated income in june 1991 |
| afim07t | estimated income in july 1991 |
| afim08t | estimated income in august 1991 |
| afim09t | estimated income in september 1991 |
| afim10t | estimated income in october 1991 |
| afim11t | estimated income in november 1991 |
| afim12t | estimated income in december 1991 |
| afrvali | imputation flag – afrval (base) |
| pid | cross-wave person identifier |
| pidp | Cross-wave person identifier (UKHLS) |