这ob真敢张口啊。不做羊穿的流产率也比这个高,怎么做了羊穿反而流产率低了? 看这里: http://www.aafp.org/afp/2007/1101/p1341.html#afp20071101p1341-b Approximately 1 to 5 percent of pregnancies are lost at 13 to 19 weeks' gestation, whereas stillbirth occurs in 0.3 percent of pregnancies at 20 to 27 weeks' gestation, a rate similar to that of third trimester stillbirth
【在 m**u 的大作中提到】 : 这ob真敢张口啊。不做羊穿的流产率也比这个高,怎么做了羊穿反而流产率低了? : 看这里: : http://www.aafp.org/afp/2007/1101/p1341.html#afp20071101p1341-b : Approximately 1 to 5 percent of pregnancies are lost at 13 to 19 weeks' : gestation, whereas stillbirth occurs in 0.3 percent of pregnancies at 20 to : 27 weeks' gestation, a rate similar to that of third trimester stillbirth
g*n
6 楼
他讲的是条件概率吧,conditional on 羊穿。
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【在 m**u 的大作中提到】 : 这ob真敢张口啊。不做羊穿的流产率也比这个高,怎么做了羊穿反而流产率低了? : 看这里: : http://www.aafp.org/afp/2007/1101/p1341.html#afp20071101p1341-b : Approximately 1 to 5 percent of pregnancies are lost at 13 to 19 weeks' : gestation, whereas stillbirth occurs in 0.3 percent of pregnancies at 20 to : 27 weeks' gestation, a rate similar to that of third trimester stillbirth