title: Emergency appendicectomy and meat consumption in the UK.
abstract: OBJECTIVE
  To compare the rates of reported emergency appendicectomies in a cohort study of vegetarians and non-vegetarians by participants' history of meat consumption.
  
  
  METHODS
  This was a prospective cohort study in which participants were asked about their lifetime history of meat consumption/avoidance and, separately, whether they had had an appendicectomy. Appendicectomy was described as either "emergency" or "non-emergency" according to details supplied by the participant.
  
  
  METHODS
  The United Kingdom.
  
  
  METHODS
  These comprised more than 11000 people, of whom 4852 (44%) completed both an appendicectomy form and a dietary questionnaire giving details of their lifetime history of meat consumption.
  
  
  RESULTS
  The percentage who reported an emergency appendicectomy was higher among lifelong meat eaters (10.7%) than either lifelong non-meat eaters (7.8%) or those who had stopped eating meat (8.0%); and the operations were performed at an earlier age in this first group (mean values 18.9, 26.0, and 19.6 years respectively). The overall age adjusted emergency participants who did not eat mean with those who ate meat was 0.47 (95% confidence interval 0.35, 0.65).
  
  
  CONCLUSIONS
  The results suggests that people who do not eat meat have a 50% lower risk of requiring an emergency appendicectomy than those who do. The data do not, however, allow the reliable testing of other hypotheses, so meat consumption may simply be a marker for another dietary, lifestyle, or socioeconomic factor.
authors.affiliation: University of Oxford, Department of Public Health and Primary Care, Radcliffe Infirmary, Oxford.
authors.forename: P
authors.initials: P
authors.lastname: Appleby
authors.forename: M
authors.initials: M
authors.lastname: Thorogood
authors.forename: K
authors.initials: K
authors.lastname: McPherson
authors.forename: J
authors.initials: J
authors.lastname: Mann
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001062:Appendectomy / Q000706:statistics & numerical data*; D015331:Cohort Studies; D004032:Diet; D014676:Diet, Vegetarian; D004630:Emergencies; D005260:Female; D006801:Humans; D008297:Male; D008460:Meat; D008875:Middle Aged; D011446:Prospective Studies; D006113:United Kingdom / Q000453:epidemiology