VWF parameter changes in pregnancy from non-pregnant baseline by ABO blood group.

Sample numbers (n): O (13); A (17); B (13); AB (3); non-0 (33). Statistical analysis:†P<0.05 difference in 3rd trimester from baseline; *AB blood group data was omitted from the statistical analysis due to small sample size; Analysis were performed by either the Student's two-tailed paired t-test or, as indicated #, the Wilcoxon Signed Rank Test. VWF parameter changes in pregnancy from non-pregnant baseline by ABO blood group.