# INCFARM topcode flag

**URL:** <https://forum.ipums.org/t/incfarm-topcode-flag/4228>\
**Category:** CPS\
**Created:** [July 11, 2021, 10:06pm UTC](https://forum.ipums.org/t/incfarm-topcode-flag/4228 "2021-07-11T22:06:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Johannes\_Fleck](https://avatars.discourse-cdn.com/v4/letter/j/50afbb/32.png) [@Johannes\_Fleck](https://forum.ipums.org/u/Johannes_Fleck)\
**Post date:** [July 11, 2021, 10:06pm UTC](https://forum.ipums.org/t/incfarm-topcode-flag/4228/1 "2021-07-11T22:06:29Z")

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The description of [INCFARM](https://cps.ipums.org/cps-action/variables/INCFARM#description_section) says “The topcoded components of INCFARM are [OINCFARM](https://cps.ipums.org/cps-action/variables/OINCFARM) and [INCLONGJ](https://cps.ipums.org/cps-action/variables/INCLONGJ).”

However, the [flag tab of INCFARM](https://cps.ipums.org/cps-action/variables/INCFARM#flags_section) shows TINCFARM as top code flag. [OINCFARM](https://cps.ipums.org/cps-action/variables/OINCFARM#flags_section) does not have a top code flag.

Is this a mistake or a deliberate choice? (If the latter, why does it differ for OINCWAGE and OINCBUS which both have a quality and a top code flag?)

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**Author:** ![KariWilliams](https://avatars.discourse-cdn.com/v4/letter/k/82dd89/32.png) [@KariWilliams](https://forum.ipums.org/u/KariWilliams)\
**Post date:** [August 4, 2021, 1:32pm UTC](https://forum.ipums.org/t/incfarm-topcode-flag/4228/2 "2021-08-04T13:32:46Z")

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[INCLONGJ](https://cps.ipums.org/cps-action/variables/INCLONGJ#codes_section) (Earnings from longest job) and [OINCFARM](https://cps.ipums.org/cps-action/variables/OINCFARM#codes_section) (Earnings from other work including farm self-employment earnings) are components of [INCFARM](https://cps.ipums.org/cps-action/variables/INCFARM#codes_section) (Farm Income). While there is a topcode flag for INCLONGJ ([TINCLONGJ](https://cps.ipums.org/cps-action/variables/TINCLONGJ#codes_section)), we do not currently have a topcode flag for OINCFARM (though this information is available through the source variable [UH\_TPCDFR1\_A1](https://cps.ipums.org/cps-action/variables/UH_TPCDFR1_A1#codes_section)). The topcode flag variable [TINCFARM](https://cps.ipums.org/cps-action/variables/TINCFARM#codes_section) contains the same information as US\_TPCDFR1\_A1 and, as such, currently only flags those whose OINCFARM components of INCFARM are top coded. Based on the INCFARM recode description, it is possible to combine both topcode flags to ensure all topcode information is included for INCFARM, however we have not confirmed that a combined topcode flag would differ from the information provided by TINCFARM. The documentation on the website is being updated to more clearly reflect the relationships between these variables. In addition, the IPUMS CPS team is planning on adding a topcode flag for INCFARM that incorporates both the topcodes for OINCFARM and INCLONGJ.