Letters

Stress and breast cancer

BMJ 2002; 325 doi: https://doi.org/10.1136/bmj.325.7363.548/a (Published 07 September 2002) Cite this as: BMJ 2002;325:548

Basic error may have occurred

  1. Tony Brady, senior statistician (tony@icnarc.org)
  1. Intensive Care National Audit and Research Centre, London WC1H 9HR
  2. Cancer Research UK London Psychosocial Group, Adamson Centre, St Thomas's Hospital, London SE1 7EH
  3. Imperial Cancer Research Fund Medical Statistics Group, Centre for Statistics in Medicine, Institute of Health Sciences, Oxford OX3 7LF
  4. Cancer Research UK London Psychosocial Group

    EDITOR—One of the main findings of the paper by Graham et al was that women who had had one or more severely stressful life experiences in the five years after diagnosis had a lower risk of recurrence than those who didn't (hazard ratio 0.52).1 Using information collected after baseline (diagnosis in this study) in a survival model is fraught with difficulty because collection of that information may not be possible after the event of interest has occurred. Careful interpretation of the results of any …

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