If you think that relative risk is worrying that Uncle Brian will start dancing at the wedding, then you need to watch this podcast by Rob Radcliffe. Rob explains and helps you define, recognise and avoid bias in trials and explains what relative risk and odds ratio are, and the difference between them.
Essential listening if you want to be able to read and interpret others research, or design your own.
Also very useful for those pesky exams and academic stations in selection processes.
Rob Radliffe is a former maths teacher and current Urology Registrar in the East Midlands, UK.