Sample size calculations for ordered categorical data

Sample size calculations for ordered categorical data - PubMed

Many clinical trials yield data on an ordered categorical scale such as very good, good, moderate, poor. Under the assumption of proportional odds, ...

' Little appears to have been published about sample size calculation for ordinal data. In Section 2, a sample size formula will be presented and justified, ...

Power and Sample Size Calculations for Ordered Categorical Data

Power and Sample Size Calculations for Ordered Categorical Data · Power: 0.9 · Significance level: 0.05 · Marginal probabilities: 0.2888889, ...

A Guide to Sample Size for Categorical Endpoints - nQuery

Learn about sample size determination methods for categorical data in clinical trials, including binary, ordered, and contingency table data.

Estimating sample sizes for binary, ordered categorical, and ...

This paper outlines the ways of calculating sample sizes in two group studies for binary, ordered categorical, and continuous outcomes. Formulas and worked ...

Sample size calculation for an ordered categorical outcome - OSF

Keywords: sample size, clinical trial, categorical variable, proportional odds model, evaluation. 1 Introduction. The power of a randomised controlled trial or ...

artcat: Sample-size calculation for an ordered categorical outcome

Sample-size calculations are used to determine either the sample size required to give a specified power or the power implied by a specified ...

Tests for Two Ordered Categorical Variables (Proportional Odds)

'Sample Size Calculations for Ordered Categorical Data.' Statistics in Medicine, 12,. 2257-2271. Julious, Steven A. 2010. Sample Sizes for Clinical Trials.

Sample size calculations for ordered categorical data - Whitehead

Abstract. Many clinical trials yield data on an ordered categorical scale such as very good, good, moderate, poor. Under the assumption of ...

Sample size calculations for ordered categorical data.

In this paper sample size formulae consistent with an eventual logistic regression analysis are derived and the influence on efficiency of the number and ...

Tests for Two Ordered Categorical Variables (Legacy) - NCSS

'Sample Size Calculations for Ordered Categorical Data.' Statistics in Medicine, 12,. 2257-2271. Julious, Steven A. 2010. Sample Sizes for Clinical Trials.

Sample Size Calculation - Statistics Solutions

When data are categorical and the level of alpha decreases, then the sample size should be bigger for the same technique. If the population size is smaller, ...

(PDF) Estimating sample sizes for binary, ordered categorical, and ...

This paper outlines the ways of calculating sample sizes in two group studies for binary, ordered categorical, and continuous outcomes.

Sample size calculation for an ordered categorical outcome

Downloadable! We describe a new command, artcat, to calculate sample size or power for a clinical trial or similar experiment with an ordered categorical ...

A Note on Power and Sample Size Calculations for the Kruskal ...

This article generalizes the power and sample size procedures proposed by Fan et al. (Citation2011) for continuous data to ordered categorical data, when ...

NCI - Power Program - Division of Cancer Prevention

Sample size calculations for ordered categorical data. Statistics in Medicine 1993; 12:2257-71. Many studies yield data on an ordered categorical scale, such as ...

Power and Sample Size Calculations for Exact Conditional ... - jstor

Journal of Medicine, Volume 306, produced 47 instances of ordinal categorical data in 32 articles. (Moses, Emerson, and Hosseini, 1984). When two-sample ...

Power and sample size for ordered categorical data - ResearchGate

We propose a new method for computing power and sample size for linear rank tests of differences between two ordered multinomial populations.

Power and sample size for ordered categorical data - Sage Journals

We propose a new method for computing power and sample size for linear rank tests of differences between two ordered multinomial populations.

Sample size calculators for your clinical research

For the purpose of sample size calculations, you can and often should make a dichotomous variable out of a variable with many possible ...