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Intraclass correlations: uses in assessing rater reliability.
Reliability coefficients often take the form of intraclass correlation coefficients. In this article, guidelines are given for choosing among six different forms of the intraclass correlation forExpand
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Statistical methods for rates and proportions
Preface.Preface to the Second Edition.Preface to the First Edition.1. An Introduction to Applied Probability.2. Statistical Inference for a Single Proportion.3. Assessing Significance in a FourfoldExpand
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The design and analysis of clinical experiments
Reliability of Measurement. Simple Linear Regression Analysis. The Parallel Groups Design. Special Cases of the Parallel Groups Study. Blocking to Control for Prognostic Variables. Stratification toExpand
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The global assessment scale. A procedure for measuring overall severity of psychiatric disturbance.
The Global Assessment Scale (GAS) is a rating scale for evaluating the overall functioning of a subject during a specified time period on a continuum from psychological or psychiatric sickness toExpand
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The Equivalence of Weighted Kappa and the Intraclass Correlation Coefficient as Measures of Reliability
or weighted kappa (Spitzer, Cohen, Fleiss and Endicott, 1967; Cohen, 1968a). Kappa is the proportion of agreement corrected for chance, and scaled to vary from -1 to +1 so that a negative valueExpand
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The measurement of interrater agreement
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Large sample standard errors of kappa and weighted kappa.
The statistics kappa (Cohen, 1960) and weighted kappa (Cohen, 1968) were introduced to provide coefficients of agreement between two raters for nominal scales. Kappa is appropriate when allExpand
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Frequency Domain Measures of Heart Period Variability and Mortality After Myocardial Infarction
BackgroundWe studied 715 patients 2 weeks after myocardial infarction to establish the associations between six frequency domain measures of heart period variability (HPV) and mortality during 4Expand
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Some Statistical Methods Useful in Circulation Research
Some statistical techniques for analyzing the kinds of studies typically reported in Circulation Research are described. Particular emphasis is given to the comparison of means from more than twoExpand
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