Breast feeding and multiple sclerosis: Research could have been reviewed

BMJ 1994; 309 doi: https://doi.org/10.1136/bmj.309.6954.610a (Published 03 September 1994) Cite this as: BMJ 1994;309:610
  1. G Dick
  1. Rowhook Medical Society, Horsham, West Sussex RH12 3PX
  2. Dipartimeno di Pediatria, Universita di Napoli Federico II, Via Pansini 5, 80131 Naples, Italy Divisione di Neurologia, Ospedale Antonio Cadarelli, Napoli e Associazone Italiana Sclerosi Multipla, Naples, Italy.

    EDITOR, - The contents of a recent paper on breast feeding and multiple sclerosis seem to have escaped a referee (incidentally, it would be a good idea if referees appended their names to articles which are accepted).1 Specifically: in any environmental study on multiple sclerosis, “selected… patients attending a neurological outpatient department” are not entirely satisfactory for cases and controls. Also, patients who “declined” or could not provide “reliable information” were “excluded.” Did this bias apply equally to the patients with multiple sclerosis and the controls?

    Furthermore, patients were contacted by two interviewers who were blind to the objectives of the study, but there is no information on the questionnaire which was used. …

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