The sensitivity for this method in estimating birth weight in normal,LGA infant IUGR,and was 88%,89%,and 86% respectively. The specificity was 90%,92%,and 88% respectively.

• 对正常胎儿体重、巨大儿、胎儿宫内发育迟缓(IUGR)诊断的敏感性分别是88%25、89%25、86%25,特异性分别是90%25、92%25、88%25。