Table 1. Pregnancy rates below and above 8.3 mm endometrial thickness
Endometrial thickness on day of HCG BHCG positive (%) BHCG negative (%) p-valuea
≤8.3
>8.3
72.40 (181/250)
67.98 (155/228)
27.60 (69/250)
32.02 (73/228)
0.4944
Total 336 142

aChi-square (p<0.05)