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Analysis of Variance and Regression Analysis

Level:
Advanced
Area:
Professional Techniques
Code:
PTA9
Duration:
03:30:00
Workshop profile:
Medical writers who wish to understand analysis of variance, linear regression, and other methods for the analysis of normally distributed continuous data. Participants should be familiar with basic statistical concepts such as P values and confidence intervals.
Objective:
To understand the methods used for analysing continuous data, to appreciate that analysis of variance and linear regression are essentially the same analyses but presented in different ways, to understand some of the assumptions underlying the analyses, and to learn what features of the analyses are important for medical writers to present when describing analyses.
Content:
The workshop will focus on understanding what the various statistical tests are, why they are done, and how to interpret the results. This will not be a tutorial in how to do the statistical tests (other than some of the simplest ones), as it is assumed that participants will generally receive the results of analyses from statisticians and be given the job of interpreting those results. • Normal distribution • Dependent and independent variables • The T-test: the simplest test for analysing normally distributed data • One-way ANOVA for comparing more than 2 groups • Simple linear regression • Multiple linear regression and more complex ANOVA models • Understanding ANOVA and regression output