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1·Objective To investigate the incidence of small for gestational age (SGA) and the perinatal correlation factors in western Guangxi.

目的探讨桂西地区小于胎龄儿（SGA）发生率及围生相关因素。

2·To study the levels of serum leptin and their roles on the growth of children aged 2~7 years old with small for gestational age(SGA).

瘦素参与2~7岁儿童的生长过程，并可作为评价此阶段儿童营养状况的指标。

3·The prevalence of obesity for children born pre term was 18%, higher than the children born small for gestational age(8.8%) significantly.

早产低体重儿的肥胖发生率为18% ，明显高于足月小样儿（8.8% ）。

4·The incidence of prenatal death, small for gestational age infants and newborn complications in EOPE group were higher than those in LOPE group(P<0.05).

早发型组围产儿死亡率、小于胎龄儿发生率和新生儿并发症发生率均高于晚发型组（P<0.05）；

5·Mothers who had been born preterm were not more likely to deliver their own children preterm. And preterm birth was not associated with small for gestational age infants.

本身早产的母亲，不见得会生早产儿，而早产与胎儿体型小无直接关系。

6·OBJECTIVE: We investigated the effects of gestational age, birth weight, small for gestational age (SGA), and large for gestational age (LGA) on risk of childhood type 1 diabetes.

妊娠年龄和出生体重和儿童1型糖尿病的危险性：一个基于人群的队列和兄弟姐妹设计研究。

7·Results The mothers of severe preeclampsia in preterm infants born child, small for gestational age children, brain damage, brain retardation were higher than the incidence of mild group(P<0.05).

结果重度子痫前期母亲所生新生儿在早产儿、小于胎龄儿、脑损伤、脑发育落后发生率方面均高于轻度组（P<0.05）。

8·Outcomes of interest were birth weight, low birth weight, small size for gestational age, perinatal mortality and neonatal mortality.

检索结果中受到关注的是出生体重、低出生体重、小于胎龄儿、围产期死亡率和新生儿死亡率。

9·Objective Previous studies suggested that a number of obstetrical factors were associated with small-for-gestational-age (SGA) infant.

目的探讨产科因素及孕母文化程度与小于胎龄儿（SGA）之间的关系。

10·Objective To observe the relation between human parvovirus B19 (HPVB19) intrauterine infection and occurrence of premature infant and full term for newborns small gestational age.

目的观察人类微小病毒B19 (HPVB19)宫内感染与早产儿、足月小于胎龄儿的关系。