Changelog

Source: NEWS.md

testhta 0.1.0

• First release of the testhta validation framework for cost-effectiveness models in R.

New Features

• Added getters to retrieve cohort simulation metrics:
  • get_costs(): Retrieve total discounted costs.
  • get_icer(): Calculate Incremental Cost-Effectiveness Ratio.
  • get_le(): Retrieve total Life Expectancy.
  • get_qalys(): Retrieve total discounted Quality-Adjusted Life Years.
• Added use_hta_unittests() to automatically generate testthat directory structures and pre-configured unit test scripts aligned with the HTA Verification Registry (T01 - T16).
• Added piping-compatible setters to dynamically override model parameters:
  • set_costs(): Modify state-occupancy costs.
  • set_discount_rate(): Modify model discount rates.
  • set_p_matrix(): Modify transition probability arrays.
  • set_time_horizon(): Modify simulation time horizon.
  • set_utilities(): Modify state-specific utilities.

Testing & Validation Helpers

• Added validation test helper assertions for use with the testthat package:
  • check_model_costs(): Assert expected costs under bounding conditions.
  • check_model_le(): Assert expected life expectancy under bounding conditions.
  • check_model_qalys(): Assert expected QALYs under bounding conditions.
  • compare_model_runs(): Assert directional and logical relationships between two model parameter configurations.
  • run_model(): Core parameter-override wrapper for execution of the underlying Markov engine.

Documentation & Infrastructure

• Created a professional pkgdown documentation website using the Bootstrap 5 flatly Bootswatch theme.
• Added comprehensive documentation website search index.
• Added a stylized hexagon logo (man/figures/logo.png).
• Added introductory and guide vignettes:
  • introduction: Setup, execute, and inspect Markov cost-effectiveness models.
  • validation-guide: How to design and run unit tests to verify model logic under boundaries.
  • automating-hta-unit-tests: Scaffolding and automating HTA model unit tests.
• Overhauled package metadata (DESCRIPTION, URLs, BugReports, and License).