Parametric versus non-parametric statistics in the analysis of randomized trials with non-normally distributed data Academic Article uri icon

Overview

MeSH Major

  • Analysis of Variance
  • Models, Statistical
  • Randomized Controlled Trials as Topic
  • Statistical Distributions
  • Statistics, Nonparametric

abstract

  • ANCOVA is the preferred method of analyzing randomized trials with baseline and post-treatment measures. In certain extreme cases, ANCOVA is less powerful than Mann-Whitney. Notably, in these cases, the estimate of treatment effect provided by ANCOVA is of questionable interpretability.

publication date

  • November 3, 2005

Research

keywords

  • Academic Article

Identity

Language

  • eng

PubMed Central ID

  • PMC1310536

Digital Object Identifier (DOI)

  • 10.1186/1471-2288-5-35

PubMed ID

  • 16269081

Additional Document Info

start page

  • 35

volume

  • 5