Bug fixes and improving results for mixed models

[larmarange]

fix #238

• [x] add unit tests

[codecov[bot]]

Codecov Report

Merging #239 (4c7e745) into main (637a9b0) will not change coverage. The diff coverage is 100.00%.

:exclamation: Current head 4c7e745 differs from pull request most recent head 99294ff. Consider uploading reports for the commit 99294ff to get more accurate results

Additional details and impacted files

[](https://app.codecov.io/gh/larmarange/broom.helpers/pull/239?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Joseph+Larmarange) ```diff @@ Coverage Diff @@ ## main #239 +/- ## ======================================= Coverage 95.48% 95.48% ======================================= Files 43 43 Lines 2679 2679 ======================================= Hits 2558 2558 Misses 121 121 ``` | [Files](https://app.codecov.io/gh/larmarange/broom.helpers/pull/239?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Joseph+Larmarange) | Coverage Δ | | |---|---|---| | [R/tidy\_disambiguate\_terms.R](https://app.codecov.io/gh/larmarange/broom.helpers/pull/239?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Joseph+Larmarange#diff-Ui90aWR5X2Rpc2FtYmlndWF0ZV90ZXJtcy5S) | `100.00% <100.00%> (ø)` | | | [R/tidy\_identify\_variables.R](https://app.codecov.io/gh/larmarange/broom.helpers/pull/239?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Joseph+Larmarange#diff-Ui90aWR5X2lkZW50aWZ5X3ZhcmlhYmxlcy5S) | `100.00% <100.00%> (ø)` | |