Smoking during pregnancy and congenital limb deficiency

BMJ 1994; 309 doi: https://doi.org/10.1136/bmj.309.6952.476a (Published 13 August 1994) Cite this as: BMJ 1994;309:476

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  1. P Lee
  1. PN Lee Statistics and Computing, Sutton, Surrey SM2 5DA.

    EDITOR, - Using a multivariate analysis that adjusted for education and birth order and showed an association cited as significant at P=0.017, Andrew E Czeizel and colleagues conclude that “maternal smoking during pregnancy raises the relative odds for terminal transverse limb deficiencies.”1 The relative odds cited for this association is 1.48, but the lower limit of the …

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