Concepedia

Power and Sample Size Calculations in Clinical Trials with Patient-Reported Outcomes under Equal and Unequal Group Sizes Based on Graded Response Model: A Simulation Study

Marziyeh Doostfatemeh, Seyyed Mohammad Taghi Ayatollah, Peyman Jafari

Value in Health · 2016 · 23 citations · 22 references

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References

22

Starting at the Beginning: An Introduction to Coefficient Alpha and Internal Consistency

David L. Streiner · Journal of Personality Assessment · 2003 · 3.6K citations

, , +18

A Meta-Analysis of Cronbach's Coefficient Alpha

Robert A. Peterson · Journal of Consumer Research · 1994 · 2.9K citations

ESTIMATION OF LATENT ABILITY USING A RESPONSE PATTERN OF GRADED SCORES1

Fumi Samejima · ETS Research Bulletin Series · 1968 · 2.6K citations · Full text

, , +25

Methods of Meta-Analysis: Correcting Error and Bias in Research Findings.

Stephen W. Raudenbush, John E. Hunter, Frank L. Schmidt · Journal of the American Statistical Association · 1991 · 2.4K citations

, , +6

Marginal Maximum Likelihood Estimation of Item Parameters: Application of an EM Algorithm

R. Darrell Bock, Murray Aitkin · Psychometrika · 1981 · 2.3K citations