# CountyNHG in 1900

**URL:** <https://forum.ipums.org/t/countynhg-in-1900/3367>\
**Category:** General\
**Created:** [February 18, 2020, 7:27am UTC](https://forum.ipums.org/t/countynhg-in-1900/3367 "2020-02-18T07:27:08Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Moshe\_Hazan](https://avatars.discourse-cdn.com/v4/letter/m/c2a13f/32.png) [@Moshe\_Hazan](https://forum.ipums.org/u/Moshe_Hazan)\
**Post date:** [February 18, 2020, 7:27am UTC](https://forum.ipums.org/t/countynhg-in-1900/3367/1 "2020-02-18T07:27:08Z")

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I’d like to use the countynhg variable in the 1900 full count census. This variable is not available for the full count, only the 5%, 1%, or 1.2% oversample.

I’m curious if I can use the 1% sample countynhg variable and merge it with the 1900 full count census based on other county variables, such as countyicp which appears in both samples.

Does this work? Or am I missing something?

Thank you!

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**Author:** ![JeffBloem](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.ipums.org/jeffbloem/32/40_2.png) [@JeffBloem](https://forum.ipums.org/u/JeffBloem)\
**Post date:** [February 18, 2020, 2:37pm UTC](https://forum.ipums.org/t/countynhg-in-1900/3367/2 "2020-02-18T14:37:27Z")

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Merging the sample data onto the full count data is not a simple or straightforward task. If I understand correctly, however, you should be able to use the sample data to create a crosswalk table describing the relationship between the [COUNTYNHG](https://usa.ipums.org/usa-action/variables/COUNTYNHG#description_section) and [COUNTYICP](https://usa.ipums.org/usa-action/variables/COUNTYICP#description_section) variables in 1900. This crosswalk can then allow you to translate most of the counties, identified via COUNTYICP, in the full count file into the COUNTYNHG coding scheme.