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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

Comparison of intraocular pressure measurements with the Reichert Pt100, the Keeler Pulsair Intellipuff portable noncontact tonometers, and Goldmann applanation tonometry.

TL;DR: The 2 NCTs agree well with GAT in normotensive patients, and the Pulsair Intellipuff also agrees well withGAT in hypertensive patients.
Journal ArticleDOI

Feasibility and Reliability of Physical Fitness Tests among Colombian Preschool Children

TL;DR: The results from this study indicate that the “Fuprecol kids” battery of tests, administered by physical education teachers, was reliable and feasible for measuring components of physical fitness in preschoolers in a school setting in Colombia.
Journal ArticleDOI

Interrater Reliability of Risk Matrix 2000/s

TL;DR: Good interrater reliability of the Risk Matrix 2000/s is indicated, although reliability varies from item to item, and strategies are suggested to increase reliability in the use of actuarial tools in routine practice.
Journal ArticleDOI

Prognostic Value of Global Longitudinal Strain-Based Left Ventricular Contractile Reserve in Candidates for Percutaneous Correction of Functional Mitral Regurgitation: Implications for Patient Selection

TL;DR: Improvement of longitudinal function emerged, beyond the ejection fraction, as an independent predictor of outcomes and could improve the selection of best candidates for the percutaneous correction of functional MR in the setting of advanced HF.
Journal ArticleDOI

Earlobe arterialized capillary blood gas analysis in the intensive care unit: a pilot study.

TL;DR: Earlobe capillary blood gas analysis is precise and can be useful for detecting extreme gasometrical values and has the potential for important benefits in the acute phase of various critical conditions and in other critical care arenas, such as in emergency medicine, advanced medical transport and pre-hospital critical care.
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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.