Article Text

Download PDFPDF

Towards evidence based medicine for paediatricians
  1. Bob Phillips
  1. Correspondence to Dr Bob Phillips, Centre for Reviews and Dissemination, University of York, York YO10 5DD, UK; bob.phillips{at}

Statistics from


No, not −1, the self-multiplication of that fancy imaginary number that helps aircraft designers make wings work properly, but a (semi) quantitative assessment of how much heterogeneity there is in a meta-analysis: I2.

You will recall that the idea of heterogeneity (mixed-up-ness) comes in both statistical and clinical flavours.1 This measure—(I2)—assesses the statistical aspect. It is often to be found …

View Full Text

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.