How to spot bias and other potential problems in randomised controlled trials.
Lewis
S C
SC
Neurosciences Trials Unit, Division of Clinical Neurosciences, Western General Hospital, Edinburgh, UK. steff.lewis@ed.ac.uk
Warlow
C P
CP
D015982:Bias; D015588:Observer Variation; D016032:Randomized Controlled Trials as Topic / Q000592:standards* / Q000706:statistics & numerical data*