NEWS.md
In SelfControlledCohort: Self-Controlled Cohort Population-Level Estimation

SelfControlledCohort 2.0.0

This is a major release and breaks backwards compatibility with version 1.x.x series code.

Changes:

Introduced a results data model definition csv file in line with other OHDSI HADES analytics packages
Removal of use of remotes for Eunomia
Creation of results data model sql for analysis in database
Export of large result sets from database with export managers
Calibration of effect estimates now computed with EmpiricalCalibration package
Storing risk window statistics is no longer an optional parameter
Removed support for CDM versions < 5.0 (and no longer includes check or parameter)
This release implements revised diagnostics aligned with SelfControlledCaseSeries package standards.

Breaking Changes:

Diagnostic names and thresholds have changed to match SCCS standards
Old diagnostics (counts, window_balance, cohort_stability, pre_exposure) have been removed
getDefaultDiagnosticThresholds() now returns different threshold names

New study Diagnostic functions

MDRR - Minimum Detectable Relative Risk (power analysis)
PRE_EXPOSURE_PROPORTION - Tests for outcomes before exposure start
PRE_EXPOSURE_P_VALUE - Statistical test for pre-exposure gain
EASE expected absolute systematic error, observed residual bias
EVENT_DEPENDENT_OBSERVATION - what percentage of events occur just before the observation period ends?

Changes:

Revised diagnostic framework to align with SCCS package
Added power analysis (MDRR) diagnostic
Added pre-exposure gain detection
Removed design-related diagnostics (window balance, cohort stability)
Updated diagnostic thresholds to match SCCS standards
Improved diagnostic result formatting with values in failure messages

SelfControlledCohort 1.6.0

Changes:

Removed support for older versions of DatabaseConnector (< 5.0.0)
Deprecated usage of oracleTempSchema in favour of tempEmulationSchema
Allow calls to run with a DatabaseConnector connection object
No longer supports undocumented use of connectionDetails$conn for storing connections when calling runSelfControlledCohort
Added function computeSccRiskWindows to allow computation of exposure risk windows without having to run full SCC analysis
Storage of results (before rate ratios are computed) now in a results table.
Storage of time at risk results no longer merged with estimates
Added tests on sqlite for faster unit testing while working on development
Added testing on redshift
Use of DatabaseConnector::renderTranslateQueryApplyBatched allowing optional callbacks for working with large data sets (too large for memory)
Added computation of conventional p-values to results

SelfControlledCohort 1.5.1

Changes:

Added support for github actions and removed travis configuration
Added computeTarDistribution flag to runSelfControlledCohort, which computes the distribution of exposure time windows for subjects experiencing the outcome and average absolute time between exposure and outcome.
Added vignette for usage with some examples

Bug Fixes: - Fixed issue with DatabaseConnector v 4.0.0 connectionDetails object on osx and linux caused by usage of connectionDetails$conn for storage of a connection