Table 1

Journal characteristics

JournalImpact factor*Use of CONSORT endorsedOverall adherence† (%)
NEJM54.42Yes‡55
The Annals IM16.104Yes‡70
The Lancet39.207Yes78
The BMJ16.378Yes65
JAMA35.289Yes‡63
  • *As determined by ISI Impact Factor 2014.

  • †Overall adherence to checklist items per journal based on our study findings.

  • ‡No explicit mention of CONSORT for Abstracts in instructions to authors.

  • NEJM, The New England Journal of Medicine; Annals IM, the Annals of Internal Medicine; The BMJ, the British Medical Journal; JAMA, the Journal of the American Medical Association.