论文部分内容阅读
目的:探索中国不同胎龄胎儿胸围孕周均值时间段增长趋势及性别差异规律。方法:综合分析比较1986年中国15城市不同胎龄新生儿调查数据和2005年深圳不同胎龄初生儿调查数据。结果:在孕29～32周胎龄段,2005年深圳初生儿胸围孕周均值低于1986年中国15城市新生儿胸围孕周均值,平均每个孕周均值减少0.7 cm;在孕33～44周胎龄段,深圳初生儿胸围孕周均值高于1986年中国15城市新生儿胸围孕周均值,平均每个孕周均值增加0.5 cm;经t检验,P<0.01和P<0.05占大多数。2005年深圳不同胎龄初生儿男与女胸围孕周均值比较:在17个孕周分组中,除孕32、33周男低于女、孕30、34周男女均值相同外,其余13个孕周均男高于女,平均每个孕周男比女增加0.5 cm。经t检验,P<0.01和P<0.05。结论:在孕33～44周胎龄段,2005年深圳不同胎龄初生儿(男+女)胸围孕周均值显著高于1986年中国15城市胸围孕周均值。中国不同胎龄胎儿胸围孕周均值存在明显的时间段(1986～2005年)增长趋势。不同胎龄胎儿胸围孕周均值存在明显男高女低的性别差异。
Objective: To explore the growth trend and gender differences of the average gestational weeks of different gestational age fetuses in China. Methods: The data of 1986 newborns with different gestational age in 15 cities in China and the data of newborns with different gestational age in Shenzhen in 2005 were compared and analyzed. Results: In gestational age of 29-32 gestational weeks, the average gestational age at birth in Shenzhen was lower than that of newborns in 15 cities in China in 2005, with an average reduction of 0.7 cm for each gestational age. In gestational age ranged from 33 to 44 Weekly gestational age, neonatal bust gestational weeks in Shenzhen average higher than in 1986 China 15 newborns in the average gestational age of the bust, an average increase of 0.5 cm per gestational age; by t test, P <0.01 and P <0.05 accounted for the majority . In 2005, the average gestational age of male and female bust of newborns with different gestational age in Shenzhen was compared. In the group of 17 gestational weeks, the mean of male and female was the same at 32 weeks and 33 weeks, The average weekly male was higher than female, with an average increase of 0.5 cm in each gestational week. After t test, P <0.01 and P <0.05. CONCLUSION: The average gestational weeks of gestational age at 33-44 gestational age in gestational age and 2005 neonates of different gestational ages in Shenzhen (male + female) were significantly higher than those of gestational age in 15 cities in China in 1986. There was a clear time period (1986 ~ 2005) in the mean gestational ages of fetuses with different gestational age in China. Different gestational age fetal bust gestational age mean significant gender differences in male and female.