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ParCC 1.4.0

New Modules

• Budget Impact Analysis – 5-year BIA framework with population sizing, uptake curves, and discounting (ISPOR Good Practice guidelines).
• PPP Currency Converter – Purchasing Power Parity conversion across 30 countries (World Bank 2022 ICP data), market exchange rate comparison, and WHO-CHOICE WTP threshold assessment (1x and 3x GDP per capita).

New Conversions

• OR to RR / RR to OR – Convert between Odds Ratios and Relative Risks using baseline risk (Zhang & Yu 1998 method).
• Effect Size Transformations – Convert between SMD and log(OR) using the Chinn (2000) formula for network meta-analysis preparation.
• Standalone NNT/NNH Calculator – Calculate Number Needed to Treat from four input modes: ARR, RR + baseline, OR + baseline, or direct probabilities.
• Log-rank to HR – Estimate Hazard Ratios from published log-rank chi-square or p-value using the Peto approximation.

New Distributions and Models

• Dirichlet Distribution – Fit Dirichlet parameters for multinomial transition probabilities in Markov models (via Gamma decomposition).
• Log-Logistic Survival – Third survival extrapolation option with non-monotonic (hump-shaped) hazard support.
• Annuity / PV Stream Calculator – Present value of recurring annual costs (ordinary annuity and annuity due).

Interface Improvements

• Global Currency Selector – Switch between INR, USD, EUR, GBP, JPY, BRL, THB, AUD, CAD, and custom currencies. All economic modules update automatically.
• Interactive Tool Overview – Collapsible accordion on the Home page with clickable tool items that navigate directly to the relevant module.
• Restructured Navbar – Explicit, user-friendly labels with logical groupings (Convert, Survival Curves, Costs & Outcomes, Learn).
• Five new pkgdown vignettes with worked examples.

ParCC 1.3.0

New Features

• HR Converter Module – Convert Hazard Ratios to time-dependent transition probabilities; compare multiple HRs simultaneously.
• Enhanced Output Panels – Step-by-step explanations, rendered MathJax formulas, and literature citations on every output panel.
• Batch HR Conversion – CSV upload for bulk HR-based conversions alongside existing rate and odds batch modes.
• pkgdown Documentation Site – Hosted at https://drpakhare.github.io/ParCC/ with vignettes for all core workflows.

ParCC 1.2.0

• Initial public release with core converters, survival extrapolation, PSA distributions, financial tools, ICER/NMB, VBP, diagnostics, and Lab Notebook.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
Health stats visible at Monitor.