Letters Calorie labelling on high street

Serious methodological flaws compromise study findings

BMJ 2011; 343 doi: http://dx.doi.org/10.1136/bmj.d5797 (Published 13 September 2011) Cite this as: BMJ 2011;343:d5797
  1. Aakanksha H Pande, PhD candidate1,
  2. Stephen B Soumerai, professor of population medicine1
  1. 1Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, 133 Brookline Street, Boston, MA 02215, USA
  1. apande{at}fas.harvard.edu

Dumanovsky and colleagues investigated the effect of calorie labelling in restaurants.1 However, their study uses one of the weakest research designs (uncontrolled pre-post study) that would not merit inclusion in a Cochrane Systematic Review of health systems. This un-interpretable paper has received widespread publicity and has been presented as a causal argument against labelling food …

View Full Text

Sign in

Log in through your institution

Free trial

Register for a free trial to thebmj.com to receive unlimited access to all content on thebmj.com for 14 days.
Sign up for a free trial

Subscribe