OHDSI/FeatureExtraction

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An R package for generating features (covariates) for a cohort using data in the Common Data Model.

Stars: 74
Forks: 63
Open beginner issues: 0
Indexed issues: 49

Dominant language: R
License: No license data
Last GitHub push: Jun 28, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue help wanted
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

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49 open issues indexed

New initiatives in biobank phenotype engineering? Open

Difficulty 5/5 Over a week Newbie friendliness 18/100

OHDSI/FeatureExtraction#335 · Opened Sep 18, 2026
For CHADS2Vasc, min/max/mean/SD contradict percentile stats Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

OHDSI/FeatureExtraction#334 · Opened Sep 9, 2026
Add features from the EPISODE table Open

Difficulty 5/5 Over a week Newbie friendliness 28/100

OHDSI/FeatureExtraction#320 · Opened Jan 8, 2026
Drug era/exposure groupings to be more configurable at ATC levels Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

OHDSI/FeatureExtraction#319 · Opened Dec 17, 2025
Documentation around conventions on using custom covariate ids Open

enhancement good first issue

Difficulty 4/5 3-5 days Newbie friendliness 38/100

OHDSI/FeatureExtraction#314 · Opened Sep 12, 2025
Extract covariates with timeId's an those without in same call Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OHDSI/FeatureExtraction#311 · Opened Aug 18, 2025
Charlson Comorbidity Index - does the feature capture CCI = 0? Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

OHDSI/FeatureExtraction#302 · Opened Apr 23, 2025
Charlson Comorbidity Index - metastasis category should use measurement table Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

OHDSI/FeatureExtraction#301 · 2 comments · 1 reaction · Opened Apr 22, 2025
Provide a more informative error when the `checksum` fails onLoad of FeatureExtraction Open

good first issue help wanted

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

OHDSI/FeatureExtraction#291 · Opened Feb 25, 2025
inconsistent handling of repeated rows in cohort Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

OHDSI/FeatureExtraction#287 · Opened Dec 6, 2024
createConnectionDetails() with snowflake dbms Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

OHDSI/FeatureExtraction#285 · 3 comments · Opened Nov 21, 2024
Add spline features for continuous variables Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

OHDSI/FeatureExtraction#284 · 1 comment · 1 reaction · Opened Nov 19, 2024
Feature cohort start in time window not available Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OHDSI/FeatureExtraction#248 · Opened Apr 19, 2024
Remove deprecated cohortId parameter Open

OHDSI/FeatureExtraction#244 · 1 assignee · Opened Apr 16, 2024
Support for CDM oncology extension Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

OHDSI/FeatureExtraction#233 · Opened Feb 22, 2024
computeStandardizedDifference does not handle temporal covariate data Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

OHDSI/FeatureExtraction#225 · 3 comments · Opened Feb 1, 2024
Warning related to the concepts_to_exclude list and the PS file Open

question

Difficulty 4/5 3-5 days Newbie friendliness 20/100

OHDSI/FeatureExtraction#209 · 1 comment · Opened Jul 26, 2023
Inclusion of Pediatrics age groups as optional Features Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

OHDSI/FeatureExtraction#190 · Opened Mar 29, 2023
Can Feature Extraction support computation with respect to target cohort_end_date Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OHDSI/FeatureExtraction#181 · 1 comment · Opened Dec 10, 2022
Methodology for normalization with max value division Open

question

Difficulty 5/5 Over a week Newbie friendliness 25/100

OHDSI/FeatureExtraction#180 · 6 comments · Opened Nov 18, 2022
EHR-based electronic frailty index Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

OHDSI/FeatureExtraction#172 · 1 comment · Opened Jul 31, 2022
Add function for creating interactions between covariates Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OHDSI/FeatureExtraction#170 · Opened Jun 21, 2022
Create cohort-based standard table 1 Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

OHDSI/FeatureExtraction#169 · 7 comments · Opened Jun 7, 2022
Throw an error if two covariate builders generate overlapping covariate IDs Open

enhancement good first issue

Difficulty 2/5 1-3 hours Newbie friendliness 62/100

OHDSI/FeatureExtraction#168 · Opened Jun 7, 2022
Mutually exclusive CCI categories not considered Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

OHDSI/FeatureExtraction#162 · Opened May 12, 2022
Updated Charlson Comorbidity Score algorithm Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

OHDSI/FeatureExtraction#160 · 1 comment · Opened May 4, 2022
Remove oracleTempSchema Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OHDSI/FeatureExtraction#159 · 1 comment · Opened Apr 1, 2022
Add the Gagne comorbidity score Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OHDSI/FeatureExtraction#147 · Opened Dec 15, 2021
Java error from getDbCovariateData Open

good first issue

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OHDSI/FeatureExtraction#146 · 10 comments · Opened Nov 10, 2021
Incorrect documentation of getDbCovariateData? Open

question

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

OHDSI/FeatureExtraction#145 · Opened Nov 10, 2021
Table1 returns non-unique entries Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

OHDSI/FeatureExtraction#143 · Opened Oct 7, 2021
Wrong join key in GetAttrCovariates.sql Open

Difficulty 1/5 Under an hour Newbie friendliness 52/100

OHDSI/FeatureExtraction#138 · 1 comment · Opened Aug 10, 2021
Tidy covariates does not remove redundant covariates if timeId is NA Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

OHDSI/FeatureExtraction#137 · Opened Aug 5, 2021
Option to turn off messages FeatureExtraction::getDbCovariateData Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

OHDSI/FeatureExtraction#135 · 1 comment · Opened Jul 26, 2021
Can't exclude concept id 900000010 (Mental Health Substance Abuse Coverage Indicator) Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

OHDSI/FeatureExtraction#130 · Opened Jul 14, 2021
Feature Extraction seems to return NA for timeId for temporalCovariate continuous covariates Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OHDSI/FeatureExtraction#127 · 3 comments · Opened Jun 2, 2021
M Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

OHDSI/FeatureExtraction#125 · 1 comment · Opened Apr 25, 2021
Standardized Difference Calc Open

OHDSI/FeatureExtraction#123 · 1 assignee · Opened Apr 7, 2021
Hospital Frailty Risk Score Feature analyses in Characterization Open

OHDSI/FeatureExtraction#119 · 1 assignee · Opened Feb 24, 2021
Invalid name for slot of class “SQLiteConnection”: extended_types error Open

Difficulty 3/5 1-2 days Newbie friendliness 30/100

OHDSI/FeatureExtraction#118 · 2 comments · 4 reactions · Opened Jan 28, 2021
Include DrugExposure features in default covariate settings Open

OHDSI/FeatureExtraction#116 · 1 assignee · Opened Jan 12, 2021
agregating data in temporal-covarate-settings produces NA timeId in covaraitesContinuous Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OHDSI/FeatureExtraction#114 · 5 comments · Opened Jan 7, 2021
Covariates from in-cohort period? Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

OHDSI/FeatureExtraction#105 · 1 comment · Opened Nov 26, 2020
CVX Codes Excluded from Covariates Open

OHDSI/FeatureExtraction#101 · 6 comments · 1 assignee · Opened Aug 17, 2020
Operator concept_id is not considered for measurement values Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

OHDSI/FeatureExtraction#100 · Opened Jul 20, 2020
cohort_attribute table is deprecated Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

OHDSI/FeatureExtraction#87 · 1 comment · Opened Mar 29, 2020
Use semicolon instead of comma as separator in table 1 specifications Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

OHDSI/FeatureExtraction#85 · Opened Mar 20, 2020
Throw meaningful error when restricting covariate IDs to covariates that are not specified Open

enhancement good first issue

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

OHDSI/FeatureExtraction#81 · Opened Oct 28, 2019
Atlas - Generate with Reports Open

enhancement

OHDSI/FeatureExtraction#191 · 2 comments · 2 assignees · Opened Mar 30, 2018

OHDSI/FeatureExtraction

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