Hazard ratios for fetal death among women who experienced fetal death before current pregnancy (n = 12,131).

* Adjusted for maternal age at conception. ** Adjusted for maternal age at conception, parity, pre-pregnancy body mass index, and in pregnancy: smoking and alcohol consumption.* 已针对受孕时母亲年龄进行校正。 ** 已针对受孕时母亲年龄、产次（parity）、孕前体重指数（pre-pregnancy body mass index），以及孕期吸烟与饮酒情况进行校正。