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. Author manuscript; available in PMC: 2012 Apr 1.
Published in final edited form as: Transfus Med Rev. 2011 Feb 23;25(2):102–110. doi: 10.1016/j.tmrv.2010.11.002

Figure 3. Antibody Duration Based on Gender And Prior Pregnancy.

Figure 3

There was a statistically-significant decrease in duration of antibody positivity between male and female patients (p=0.005). No prior pregnancy significantly decreased the duration of antibody positivity compared to having been previously pregnant (p=0.01). However, there was no effect based on the number of prior pregnancies. The data are plotted until the last patient in each group became antibody-negative.