Assessing agreement

May 9, 2017 by in GENERAL & FAMILY MEDICINE Comments Off on Assessing agreement

Measurement Variability and Error A biological variable measured on each of a number of individuals will always exhibit a certain amount of variability. The measurements are likely to vary between…

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Correlation

May 9, 2017 by in GENERAL & FAMILY MEDICINE Comments Off on Correlation

Introduction Correlation analysis is concerned with measuring the degree of association between two variables, x and y. Initially, we assume that both x and y are numerical, e.g. height and…

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Diagnostic tools

May 9, 2017 by in GENERAL & FAMILY MEDICINE Comments Off on Diagnostic tools

An individual’s state of health is often characterized by a number of numerical or categorical measures. In this context, an appropriate reference interval (Chapters 6 and 7) and/or diagnostic test…

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Checking assumptions

May 9, 2017 by in GENERAL & FAMILY MEDICINE Comments Off on Checking assumptions

Why Bother? Computer analysis of data offers the opportunity of handling large data sets that might otherwise be beyond our capabilities. However, do not be tempted to ‘have a go’…

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