Monday, 18 October 2010

MRCP revision battle 33.7: Levels of evidence

In this age of evidence-based medicine there is a scale to judge how "good" the evidence is:

Ia: metaanalysis of RCT

IIa: controlled trial
IIb: experimental trial

III: case series, case-control studies

IV: 'expert' opinions

Remember these because the odd MRCP question asks you what level of evidence a particular study is providing.

To the final MRCP revision battle of the day...