NSAIDs during pregnancy and risk of miscarriage

BMJ 2004; 328 doi: https://doi.org/10.1136/bmj.328.7431.108-b (Published 09 January 2004) Cite this as: BMJ 2004;328:108

Authors' reply

  1. De-Kun Li, epidemiologist ([email protected]),
  2. Liyan Liu, programmer analyst,
  3. Raxana Odouli, research associate
  1. Division of Research, Kaiser Foundation Research Institute, Kaiser Permanente, 2000 Broadway, Oakland, CA 94612, USA

    EDITOR—Although exposure to magnetic fields during pregnancy was associated with miscarriage,1 it was not associated with use of non-steroidal anti-inflammatory drugs (NSAIDs). Therefore it was not a confounder, and adjustment for exposure to magnetic fields did not make any difference to the association between NSAID use and miscarriage. With regard to interviews after miscarriage, please refer to our previous response on bmj.com.2 The bottom line was: had we included only women who were interviewed before …

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