Wald df Sig. (p) EXP(B) 95.0%C.I. for EXP(B) Lower Upper Log Viral Load of Mothers 4.023 1 0.047 3.439 1.029 11.499 NK cells Overall (20-30 cells/30 hpf) - Cat A 3.386 2 1.84 - - - NK (<4 cells/30 hpf vs 20-30cells/30hpf) - Cat B 2.129 1 0.145 3.424 0.655 17.891 NK (10-19 cells/30 hpf vs 20-30cells/30 hpf) - Cat C 0.006 1 0.940 0.929 0.138 6.237 HLA-G1 3.376 1 0.066 1.297 0.983 1.712 Gender of Babies 2.906 1 0.088 3.701 0.833 13.881 Constant 6.743 1 0.010 0.001 - -

Table 3: Logistic Regression to Determine the Predictive Value of NK Response in the Placenta, Maternal Viraemia, HLA-G1 Expression and Babies Gender. N=55