NSAIDs during pregnancy and risk of miscarriageBMJ 2004; 328 doi: https://doi.org/10.1136/bmj.328.7431.108-a (Published 09 January 2004) Cite this as: BMJ 2004;328:108
True risks or only suspicions?
- Benedetta Schiavetti, research fellow (email@example.com),
- Antonio Clavenna, senior research fellow,
- Rita Campi, statistician,
- Maurizio Bonati, head
- Laboratory for Mother and Child Health and CRIF-Regional Drug Information Centre Mario Negri Institute for Pharmacological Research, I-20157 Milan, Italy
EDITOR—The finding of Li et al of an association between an increased risk of miscarriage and use of non-steroidal anti-inflammatory drugs (NSAIDs) relies on biased data.1 For the same cohort of women, previous analysis showed that exposure to magnetic fields was a risk factor for miscarriage,2 and this variable should have been included. Moreover, 103/170 …