Rodríguez N, Guzmán E, Villarroel L
Rev Chil Obstet Ginecol. 1989;54(5):333-7.
Five hundred thirteen echographic reports are analyzed in order to predict fetal sex between 17 and 39 weeks of pregnancy. The diagnostic certainty was of 98.06%. The error was of 1.48% for masculine sex and 2.49% for feminine sex. Podalic presentation and early and late pregnancy influenced negatively in the prediction of the fetal sex. The amniotic fluid, placental localization, and any abnormality of the fetal anatomy, have no influence in the prediction of the sex. The best moment for sex prediction was between 28 and 36 weeks of pregnancy.
分析了513份超声报告，以预测妊娠17至39周之间的胎儿性别。诊断确定性为98.06%。男性性别的错误率为1.48%，女性性别的错误率为2.49%。胎先露以及妊娠早期和晚期对胎儿性别的预测有负面影响。羊水、胎盘位置以及胎儿解剖结构的任何异常对性别的预测均无影响。预测性别的最佳时机是妊娠28至36周之间。
