Odds ratios and 95% CI for all cases of leukaemia in children under 15 given intramuscular vitamin K compared with those given no treatment in all six.

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Presentation transcript:

Odds ratios and 95% CI for all cases of leukaemia in children under 15 given intramuscular vitamin K compared with those given no treatment in all six published case–control studies where children have been matched for date and place of birth. Odds ratios and 95% CI for all cases of leukaemia in children under 15 given intramuscular vitamin K compared with those given no treatment in all six published case–control studies where children have been matched for date and place of birth. The previously unpublished OR for the 148 babies in the North of England study born in units where clear documentation made “imputation” of treatment from a knowledge of hospital policy unnecessary is 1.32 (95% CI: 0.71–2.47).There were 47 discordant case sets. Unni Wariyar et al. Arch Dis Child Fetal Neonatal Ed 2000;82:F64-F68 Copyright © BMJ Publishing Group Ltd & Royal College of Paediatrics and Child Health. All rights reserved.