Letters

Balancing benefits and harms in health care:

BMJ 2003; 327 doi: https://doi.org/10.1136/bmj.327.7417.750-b (Published 25 September 2003) Cite this as: BMJ 2003;327:750

Observational data on harm are already included in systematic reviews

  1. Tom Jefferson (toj1@aol.com), coordinator,
  2. Vittorio Demicheli (demichelivittorio@asl20.piemonte.it), coordinator
  1. Cochrane Vaccines Field, Servizio Epidemiologia ASL 20, Via Venezia, 6, I-15100 Alessandria, Italy
  2. Cochrane Vaccines Field, Servizio Epidemiologia ASL 20, Via Venezia, 6, I-15100 Alessandria, Italy

    EDITOR–The correspondence on the issue of including observational data of harm in systematic reviews surprised us.1 2 The tone of the prose implied that this might happen in the future, and the limits of randomised controlled trials discussed told readers what anyone working in assessing adverse events knows only too well. Observational data have been included in systematic …

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