I made a documentary about cohort studies in epidemiology, on BBC Radio 4

I made a documentary about prospective cohort studies in epidemiology, they're the tool we use to find out if one thing is associated with another, where trials are impossible. It's really good. Instead of reading about it, listen here: www.bbc.co.uk/iplayer/episode/b012wg2... Or listen live when it's repeated tonight on Radio 4 at 9pm. Hurrah!   Previously [...]