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OBJECTIVE

To compare the efficacy of low-dose aspirin alone versus low-dose aspirin plus low molecular weight heparin in pregnant women with antiphospholipid syndrome and recurrent miscarriage as prophylaxis against pregnancy loss.

METHODS

From a regional miscarriage clinic, 119 consecutive women with persistently positive tests for lupus anticoagulant and/or anticardiolipin immunoglobulin G and M antibody were invited to participate in a randomized, controlled trial between 1997 and 2000. After ethical approval and adherence to a written protocol, 12 women were unwilling to participate, five failed exclusion/inclusion criteria, and four were nonpregnant. Laboratory analysis was performed by Sheffield University Coagulation Department, electronically generated randomization by Manchester University Centre for Cancer Epidemiology, and data collection and analysis by a research officer at Leeds …