| lpno | person number |
| lficode | income receipt code |
| lfrall | received payment each month |
| lfr01 | payment received in september 2001 |
| lfr02 | payment received in october 2001 |
| lfr03 | payment received in november 2001 |
| lfr04 | payment received in december 2001 |
| lfr05 | payment received in january 2002 |
| lfr06 | payment received in february 2002 |
| lfr07 | payment received in march 2002 |
| lfr08 | payment received in april 2002 |
| lfr09 | payment received in may 2002 |
| lfr10 | payment received in june 2002 |
| lfr11 | payment received in july 2002 |
| lfr12 | payment received in august 2002 |
| lfr13 | payment received in september 2002 |
| lfr14 | payment received in october 2002 |
| lfr15 | payment received in november 2002 |
| lfr16 | payment received in december 2002 |
| lfr17 | payment received in january 2003 |
| lfr18 | payment received in february 2003 |
| lfr19 | payment received in march 2003 |
| lfr20 | payment received in april 2003 |
| lfrnow | is still receiving payment |
| lfrval | last amount received |
| lfrw | weeks covered by last amount received |
| lfrjt | last payment: sole or joint recipient |
| lfrjtpn | pno of joint recipient |
| lhid | household identification number |
| lfiseq | income receipt sequence number |
| lfim09l | estimated income in september 2001 |
| lfim10l | estimated income in october 2001 |
| lfim11l | estimated income in november 2001 |
| lfim12l | estimated income in december 2001 |
| lfim01t | estimated income in january 2002 |
| lfim02t | estimated income in february 2002 |
| lfim03t | estimated income in march 2002 |
| lfim04t | estimated income in april 2002 |
| lfim05t | estimated income in may 2002 |
| lfim06t | estimated income in june 2002 |
| lfim07t | estimated income in july 2002 |
| lfim08t | estimated income in august 2002 |
| lfim09t | estimated income in september 2002 |
| lfim10t | estimated income in october 2002 |
| lfim11t | estimated income in november 2002 |
| lfim12t | estimated income in december 2002 |
| lfim01n | estimated income in january 2003 |
| lfim02n | estimated income in february 2003 |
| lfim03n | estimated income in march 2003 |
| lfim04n | estimated income in april 2003 |
| lfrjtvf | joint receipt verification flag |
| lfrvali | imputation flag – lfrval (base) |
| pid | cross-wave person identifier |
| pidp | Cross-wave person identifier (UKHLS) |