OHDSI / OHDSI/FeatureExtraction
Charlson Comorbidity Index - does the feature capture CCI = 0?
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- Dominant language
- R
- Stars
- 74
- Forks
- 63
- PR merge metrics
- No merged PRs in 30d
Description
(https://github.com/OHDSI/FeatureExtraction/blob/114785a49f4ee1ac905956080cddc3fca5299f5e/inst/sql/sql_server/CharlsonIndex.sql#L389)
this query uses INNER JOINS , so if a person doesn't have any qualifying event from charlson_concepts, it will be excluded from the analysis, while such a person should get CCI = 0
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reading inst/sql/sql_server/CharlsonIndex.sql around line 389, focusing on the INNER JOINs and how people without qualifying Charlson events are handled. Confirm that people with no qualifying events remain in the analysis and receive CCI = 0.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- sql
- Domain
- databases
- Issue type
- Bug
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 55/100