Case-control studies of Prothrombin 20120 G-A Polymorphism and Severe Preeclampsia.

Q = 11.65, p = 0.39, I2 = 5.8%.
a: 60% of the cases were African American, 40% were white Caucasian;
b: 90% of the cases were Caucasian and 10% were non-Caucasian.

Q值为11.65，p值为0.39，I²值为5.8%。
a：60%的受试病例为非裔美国人（African American），40%为高加索白人（white Caucasian）；
b：90%的受试病例为高加索人（Caucasian），10%为非高加索人。