Summary
This document is a technical report that outlines various methods for power and sample size analysis using Stata's commands. It details how to compute power, sample size, effect size, and confidence intervals for different statistical tests, including hypothesis tests, ANOVA models, linear regression, and logistic regression. The report explains the functionality of commands such as 'power' and 'ciwidth', which allow users to determine the necessary sample size to achieve a desired power level or confidence interval width. Additionally, it describes how to perform analyses for clustered data and survival analysis, as well as how to customize analyses by adding user-defined methods. The document provides specific examples of command usage, including parameters for estimating sample sizes for various statistical tests, ensuring that users can apply these methods effectively in their research.
