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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

The Validity and Reliability Characteristics of the M-BACK Questionnaire to Assess the Barriers, Attitudes, Confidence, and Knowledge of Mental Health Staff Regarding Metabolic Health of Mental Health Service Users.

TL;DR: The M-BACK questionnaire as discussed by the authors was developed to evaluate the impact of specialised training in metabolic health care for mental health nurses and evaluated the effectiveness of interventions aimed at increasing uptake of metabolic monitoring in people living with severe mental illness.
Journal ArticleDOI

Test-retest reliability and minimal detectable change of the Cognitive Abilities Screening Instrument in patients with dementia.

TL;DR: Clinicians and researchers should be cautious while using these four domains to explain score changes between repeated assessments of patients with dementia, as four domains demonstrated lower ICC values and substantial random measurement errors.
Journal ArticleDOI

Assessment of Psychometric Properties of Various Balance Assessment Tools in Persons With Cervical Spondylotic Myelopathy

TL;DR: The Brief BESTest is the most preferred tool for persons with CSM because of its excellent reliability, validity, and short administration time, whereas the BBS is the least preferred due to its substantial ceiling effect.
Journal ArticleDOI

Reliability of noninvasive hemodynamic assessment with Doppler echocardiography: comparison with the invasive evaluation.

TL;DR: A multiparametric approach for the evaluation of left ventricle filling pressures is advisable and the 2016 American Society of Echocardiography/European Association of Cardiovascular Imaging recommendations are reliable even in a heterogeneous population with a significant quota of precapillary pulmonary hypertension.
Journal ArticleDOI

Is the location of the signal intensity weighted centroid a reliable measurement of fluid displacement within the disc

TL;DR: The location of the signal-intensity-weighted-centroid is a reliable biomarker for investigating the effects of disc interventions and is compared to mean signal intensity and area measurements in adults with back pain.
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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.