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Updated: Feb 28, 2026

A Clinical Trial Assessing the Safety, Efficacy, and Delivery of Olive-Oil-Based Three-Chamber Bags for Parenteral Nutrition
Published on: September 20, 2019
Primary Question and Hypothesis Testing in Randomized Controlled Clinical Trials
1Department of Biostatistics, College of Public Health, University of Nebraska Medical Center, Omaha, NE 68198-4375 USA.
Abstract:
We briefly reviewed and provided cautions about some of the fundamental concepts used in the design of medical and public studies, especially primary question, hypothesis testing and sample size in this short note. We also talked about some of the extensions and development in the recent years.
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