OHDSI/CohortMethod

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An R package for performing new-user cohort studies in an observational database in the OMOP Common Data Model.

Stars: 89
Forks: 68
Open beginner issues: 0
Indexed issues: 16

Dominant language: R
License: No license data
Last GitHub push: Jun 22, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

Open All

16 open issues indexed

left truncation for outcome washout Open

enhancement

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

OHDSI/CohortMethod#198 · 1 comment · Opened May 13, 2026
Down sampling fails when target & comparator have 0 records Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

OHDSI/CohortMethod#195 · Opened Apr 10, 2026
CM v6: Silently delete old files when analysis specification changes? Open

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

OHDSI/CohortMethod#192 · 2 comments · Opened Jan 29, 2026
Kaplan-Meier counts per year Open

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

OHDSI/CohortMethod#182 · Opened May 22, 2025
Help needed: not clear how to use inverse probability of treatment weighting + additional covariates Open

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

OHDSI/CohortMethod#180 · Opened Mar 6, 2025
A bug in calibrateGroup Open

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

OHDSI/CohortMethod#170 · Opened Nov 24, 2024
Feature request: summary of cause-specific censoring for CohortMethod module Open

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

OHDSI/CohortMethod#165 · 3 comments · Opened Feb 28, 2024
Automatically compute covariate balance in subgroups when specifying interaction terms Open

enhancement

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

OHDSI/CohortMethod#150 · Opened Oct 9, 2023
question on equipoise calculation Open

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

OHDSI/CohortMethod#144 · 3 comments · Opened Jun 16, 2023
MetaData class proposal Open

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

OHDSI/CohortMethod#142 · 5 comments · Opened May 17, 2023
Refactor getDbCohortMethodData() Open

enhancement

OHDSI/CohortMethod#134 · 10 comments · 1 assignee · Opened Mar 17, 2023
Handle edge case when user specifies no covariates Open

bug

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

OHDSI/CohortMethod#130 · Opened Oct 20, 2022
Error from repeated calls to connect/ disconnect Open

enhancement help wanted

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

OHDSI/CohortMethod#112 · 1 comment · Opened Dec 21, 2021
Implement power calculations for logistic regression and Poisson models Open

enhancement help wanted

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

OHDSI/CohortMethod#91 · 1 comment · 1 reaction · Opened Feb 17, 2020
Should we add 'assumption test' for Cox Hazard model? Open

enhancement

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

OHDSI/CohortMethod#84 · 7 comments · Opened Jul 3, 2019
Add continuous outcome models Open

exploratory

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

OHDSI/CohortMethod#82 · Opened May 10, 2019

OHDSI/CohortMethod

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