Objective:To investigate the predictive value of non stress test(NST) to the outcome of perinatals in idiopathic oligohydramnios pregnancies.
目的 :探讨无应激试验 (NST)对特发性羊水过少围生儿预后的预测价值。
Clinical significance of umbilical artery blood S/D value and fetal heart non-stress test in evaluation prognosis of fetus;
脐血流S/D值与胎心无应激试验在评价胎儿预后中的意义
Objective To study the status of non-response to HBV vaccine and the factors of non-responders with HBV vaccine in Guangdong province.
目的探讨广东省一般人群接种乙型肝炎疫苗后无应答的状况和影响因素。
It further analyzes the distribution of unit non-responses and item non-responses in these studies,and cautions that non-response rate has reached such a high level that it will cause estimation bias.
目前,在许多研究中国政治和相关理论问题的概率抽样调查中,单元无应答率和选项无应答率都已经达到了较高的水平。
Objective To analyze characteristics of low and non response state in children with yeast derived hepatitis B vaccination.
目的 探讨中小学生接种酵母重组基因工程乙型肝炎疫苗后低、无应答反应的情况。
The application of stressless construction control in Songhuajiang cable-stayed bridge;
无应力状态施工控制法在松花江斜拉桥的应用