Post hoc Power Analysis: Is it an informative and meaningful analysis

Abstract

Power analysis is a key component for planning prospective studies such as clinical trials. However, some journals in biomedical and psychosocial sciences ask for power analysis for data already collected and analyzed before accepting manuscripts for publications. In this report, we take a close look at such post-hoc power analysis for retrospective studies, and to see if it is informative for understanding power for detecting significant effects for results analyzed using the same data upon which the power analysis is based on. We use Monte Carlo simulation to investigate the performance of post-hoc power analysis.

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Document Details

Document Type
Technical Report
Publication Date
Aug 08, 2019
Accession Number
AD1106015

Entities

People

  • Anna Rivera
  • Rita Hedo
  • Rudolph Rull
  • Sabrina Richardson
  • Xin M. Tu
  • Yiran Zhang

Organizations

  • Naval Health Research Center

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • California
  • Clinical Trials
  • Data Analysis
  • Data Science
  • Equations
  • Family Medicine
  • Health
  • Histograms
  • Information Science
  • Monte Carlo Method
  • Normal Distribution
  • Probability
  • Psychiatry
  • Public Health
  • Simulations
  • Statistical Samples
  • Statistical Tests

Readers

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Technology Areas

  • Biotechnology