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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

An environmental audit tool suitable for use in homelike facilities for people with dementia

TL;DR: To compare an assessment tool developed for use on contemporary homelike environments, the Environmental Audit Tool (EAT), with the gold standard assessments for residential facilities for people with dementia, the Special Care Unit Environmental Quality Scale (SCUEQS) and the global score of the Therapeutic Environment Screening Survey for Nursing Homes (TESS‐NH).
Journal ArticleDOI

Reliability and agreement studies: a guide for clinical investigators

Ruben Hernaez
- 01 Jul 2015 - 
TL;DR: The backbone of this paper will rely on the CO nsensus-based S tandards for the selection of health measurement instruments under the COSMIN initiative, a multidisciplinary, international consensus which aimed to create standards to evaluate the methodological quality and design and preferred statistical analyses of a study on measurement properties.
Journal ArticleDOI

Koos Classification of Vestibular Schwannomas: A Reliability Study.

TL;DR: It is demonstrated that the Koos classification system for vestibular schwannoma is a reliable method for tumor classification and lends further support to the results of current literature using Koos grading system.
Journal ArticleDOI

Reliability and normal values of various computed tomography methods for quantifying distal radioulnar joint translation.

TL;DR: This study suggests that the subluxation ratio method is the most useful technique for measuring translation of the distal radioulnar joint as a result of its reliability and simplicity.
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What is the optimal sample size for DA?

The optimal sample size for DA is not mentioned in the provided information.