Basic statistics and epidemiology: a practical guide

What are statistics?

Populations and samples

Random sampling

Presenting data

Frequencies, percentages, proportions and rates

Types of data

Mean, median and mode

Centiles

Standard deviation

Standard error

Normal distribution

Confidence intervals

Probability

Hypothesis tests and P-values

The t-tests

Data checking

Parametric and non-parametric tests

Correlation and linear regression

Analysis of variance and some other types of regression

Chi-squared test

Statistical power and samples size

Effect size

What is epidemiology?

Bias and confounding

Measuring disease frequncey

Measuring association in epidemiology

Prevalence studies

Questionnaires

Cohort studies

Case-control studies

Randomised controlled trials

Screening

Evidence-based healthcare.