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Journal ArticleDOI

Sample size and optimal designs for reliability studies

TLDR
A functional approximation to earlier exact results is shown to have excellent agreement with the exact results and one can use it easily without intensive numerical computation.
Abstract
A method is developed to calculate the required number of subjects k in a reliability study, where reliability is measured using the intraclass correlation rho. The method is based on a functional approximation to earlier exact results. The approximation is shown to have excellent agreement with the exact results and one can use it easily without intensive numerical computation. Optimal design configurations are also discussed; for reliability values of about 40 per cent or higher, use of two or three observations per subject will minimize the total number of observations required.

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Journal ArticleDOI

Reliability of novice physiotherapists for measuring Cobb angle using a digital method.

TL;DR: A digital Cobb’s method had excellent reliability when used by a novice health professional rater, confirming the ease of using this method to detect and monitor kyphosis in general hospitals, clinics, or research facilities.
Journal ArticleDOI

Reliability of the sperm chromatin dispersion assay to evaluate sperm deoxyribonucleic acid damage in men with infertility

TL;DR: In this paper, the authors investigated the intraindividual agreement of the sperm chromatin dispersion (SCD) assay results to assess sperm DNA fragmentation (SDF) in men with infertility.
Journal ArticleDOI

Cross-cultural Adaptation of the 4-Habits Coding Scheme Into French to Assess Physician Communication Skills

TL;DR: The French version of the Four Habits Coding Scheme demonstrates satisfactory internal consistency but requires the use of two independent raters to achieve acceptable reliability, and the underlying factor structure of the original US version and cross-cultural adaptations of the 4-HCS deserve further investigation.
Journal ArticleDOI

Reliability of the log-transformed EMG amplitude-power output relationship for incremental knee-extensor ergometry.

TL;DR: The log‐transformed EMG amplitude‐power output relationship is a reliable index for measuring motor unit activation in healthy college‐aged men.
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What is the optimal sample size for DA?

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