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Changelog

Source: NEWS.md

biostats 1.1.2

CRAN release: 2026-03-05

Bug fixes

  • sample_size(): corrected dropout adjustment from approximate formula n * (1 + dropout) to exact formula n / (1 - dropout), preventing underpowered enrollment at higher dropout rates.

biostats 1.1.1

CRAN release: 2025-12-16

Improvements

  • Minor change to sample_size function for better readability.

biostats 1.1.0

CRAN release: 2025-12-06

New Features

  • Implemented Lilliefors correction for Kolmogorov-Smirnov normality tests in both normality() and summary_table() functions. The Lilliefors test provides more accurate p-values when distribution parameters are estimated from sample data.

Improvements

  • Enhanced p-value formatting to display “p < 0.001” instead of “p = < 0.001”
  • Added methodological references: Lilliefors (1967) and Dallal & Wilkinson (1986)
  • Updated documentation to clarify that K-S option now uses Lilliefors correction

Dependencies

  • Added nortest package to Imports

biostats 1.0.0

CRAN release: 2025-11-13

  • Initial CRAN submission.