NEWS

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CohortGenerator 1.1.0 (2026-03-03)

New Features

• Adds functions and documentation for computing attrition for cohorts and subsetted cohorts (#123, #79)

CohortGenerator 1.0.2 (2026-02-10)

Bug Fixes

• Fix bug where negate parameter of createCohortSubsetOperator was not passed properly to the SQL statement (#264)
• Fix deprecation messages (#263)
• Fix issue with unboxing nulls (#262)

CohortGenerator 1.0.1 (2025-11-17)

Bug Fixes

• Remove calls to lifecycle and add unit tests

CohortGenerator 1.0.0 (2025-11-12)

New Features

• SQL cohorts as first class citizens - SQL templates for non-standard cohorts or large, bulk operations (#133, #247)
• Remove file-based incremental operations. Creation of database cohort_checksum tables that enables verification of generated cohorts and incremental execution in distributed environments (#206, #131, #254)
• Abbreviated logging for cohorts already generated (#113)
• Added maximumChortDuration to the LimitSubset operator (#240)
• Added "recipe" functions for creating indication and restriction subsets (#209)
• Deprecate subset operator function names and add operator suffix (#233)
• Removes default 'print friendly' long text of subgroup names (#135, #231)
• Add pretty print to subset definitions that includes SQL and logic definitions (#218)

Bug Fixes

• Limit subset operator produces broken SQL if R date of length 0 is passed instead of NULL (#252)
• Remove warning around finalize (#242)

CohortGenerator 0.12.2 (2025-09-11)

• Updates unit tests to use lowercase field names (#237)

CohortGenerator 0.12.1 (2025-09-05)

Bug Fixes

• Fix logical issue with null minimum cohort duration

CohortGenerator 0.12.0 (2025-07-31)

New Features

• Backwards compatible extension to CohortSubsetOperators and cohortSubsetWindows to allow windowing to be logic of any length
• Include observation table when creating negative control cohorts (#198)
• Improvements to cohort subset documentation (#199)
• Add negate parameter to createSubsetCohortWindow function (#217)

Bug Fixes

• Remove RJSONIO from dependency list (#202)
• Upgrade GitHub Actions to use Ubuntu 22.04 (#204)
• Add missing database_id as primary key of cg_cohort_censor_stats (#215)
• saveIncremental prevents saving empty files (#212)
• Subset identifier expressions are not deserialized (#225)

CohortGenerator 0.11.2 (2024-09-30)

• Ensure temp tables are dropped before creating them (#188)

CohortGenerator 0.11.1 (2024-09-15)

• CohortGenerator added to CRAN (#77)

CohortGenerator 0.11.0

New Features

• Add support for minimum cell count (#176)

Bug Fixes

• Multiple calls to export stats causing duplicates in cohort inclusion file (#179)
• Updates to subset documentation (#180, #181)
• Negative control outcome generation bug (#177)

CohortGenerator 0.10.0

New Features

• Add runCohortGeneration function (Issue #165)
• Adopt ResultModelManager for handling results data models & uploading. Extend results data model to include information on cohort subsets(#154, #162)
• Remove REMOTES entries for CirceR and Eunomia which are now in CRAN (#145)
• Unit tests now running on all OHDSI DB Platforms (#151)

Bug Fixes

• Negation of cohort subset operator must join on subject_id AND start_date (#167)
• Allow integer as cohort ID (#146)
• Use native messaging functions for output vs. ParallelLogger (#97)
• Prevent upload of inclusion rule information (#78)
• Expose colTypes when working with .csv files (#59)
• Remove bit64 from package (mostly) (#152)
• Updated documentation for cohort subset negate feature (#111)

CohortGenerator 0.9.0

• Random sample functionality (for development only) (Issue #129)
• Incremental mode for negative control cohort generation (Issue #137)
• Fixes getCohortCounts() if cohortIds is not specified, but cohortDefinitionSet is. (Issue #136)
• Add cohort ID to generation output messages (Issue #132)
• Add databaseId to output of getStatsTable() (Issue #116)
• Prevent duplicate cohort IDs in cohortDefinitionSet (Issue #130)
• Fix cohort stats query for Oracle (Issue #143)
• Ensure databaseId applied to all returned cohort counts (Issue #144)
• Preserve backwards compatibility if cohort sample table is not in the list of cohort table names (Issue #147)

CohortGenerator 0.8.1

• Include cohorts with 0 people in cohort counts (Issue #91).
• Use numeric for cohort ID (Issue #98)
• Allow big ints for target pairs (#103)
• Pass tempEmulationSchema when creating negative control cohorts (#104)
• Target CDM v5.4 for unit tests (#119)
• Fix for subset references (#115)
• Allow for subset cohort name templating (#118)
• Allow all entries with limit operator and do not require > 0 days follow up (#112)

CohortGenerator 0.8.0

• New feature: cohort subsetting (Issue #67).
• Removes the evaluation of ROhdsiWebApi code in vignettes (Issue #70)
• Basic tests for different database platforms (#71)

CohortGenerator 0.7.0

• Fixes data type issue for Google Big Query (Issue #51).
• Removes the databaseId field from the cohort inclusion table (Issue #52)
• Adds the ability to generate negative control outcome cohorts for use in population-level estimation. (Issue #9)

CohortGenerator 0.6.0

• Add more flexibility when reading/writing CSV files including appending (Issue #44), flags for disabling warnings (Issue #38) and removing unhelpful warnings (Issue #43).
• Added better error handling to saveCohortDefinitionSet (Issue #25)
• Add better handling of column name casing in CSV files that hold cohort settings. (Issue #37)
• Added functions to check if a data.frame conforms to a cohortDefinitionSet (Issue #21)

CohortGenerator 0.5.0

• Allow for specification of the database_id in export methods. (Issue #18)
• getCohortStats function allows for exporting cohort statistics into data frames (Pull Request #24)
• Add utility methods for reading/writing CSV files. (Issue #16)

CohortGenerator 0.4.0

• Update dependency versions in DESCRIPTION to resolve issues when using older versions of readr/stringi. (Issue #13)
• Breaking change: change the defaults for saving/getting a cohortDefinitionSet to/from the file system. (Issue #16)
• getCohortCounts now supports an optional parameter cohortDefinitionSet which will join the cohort counts with the cohort definition set when desired (Issue #14)

CohortGenerator 0.3.0

• Added getCohortDefintionSet function for retrieving a cohort definition set from either a package or the file system
• Re-factored saveCohortDefinitionSet to remove the settingsFolder. The settingsFileName should include the path to the file.
• Bug fixes

CohortGenerator 0.2.0

• Renamed createCohortTable to createCohortTables to include all cohort statistics tables
• Renamed createEmptyCohortSet to createEmptyCohortDefinitionSet to make this consistent with ROhdsiWebApi and CohortDiagnostics
• Added dropCohortStatsTables function for removing cohort statistics tables
• Added exportCohortStatsTables function for exporting cohort statistics to CSV files
• Added getCohortTableNames function to define the list of cohort table names to create
• Added insertInclusionRuleNames for inserting the inclusion rule names into the cohort stats table
• Added saveCohortDefinitionSet to save the cohort definition set to the file system for use by study packages
• Added a vignette and updated documentation
• Remove CirceR dependency and related functions

CohortGenerator 0.1.1

Fixing documentation

CohortGenerator 0.1.0

Updating function calls to use "generate" instead of "instantiate"

CohortGenerator 0.0.1

Initial version