TY - JOUR
T1 - Teaching tip: balloons and teddy bears
JF - Evidence Based Medicine
JO - Evid Based Med
SP - 39
LP - 39
DO - 10.1136/ebm.11.2.39
VL - 11
IS - 2
AU - Gervase Vernon
Y1 - 2006/04/01
UR - http://ebm.bmj.com/content/11/2/39.abstract
N2 - We all know that the choice of the measure of effect (relative risk reduction [RRR], absolute risk reduction [ARR], or number needed to treat [NNT]) influences attitudes to a treatment. But how do we make this memorable for students? There are 2 types of “statistics”: those whose value depends on the underlying frequency of a disease and those statistics whose value does not depend on it (“invariant statistics”). Thus the RRR and its friends RBI (relative benefit increase) and RRI (relative risk …
ER -