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
Ib: 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...