胎儿营养不良及其影响因素的非条件Logistic回归分析

Logistic regression analysis of fetal malnutrition and its affected factors

目的 了解胎儿营养不良 (FM)发生情况、影响因素及与小于胎龄儿 (SGA)的关系。方法 用新生儿出生体重百分位数评定宫内发育、临床营养状态评估法 (CANS)确定FM。用非条件Logistic回归分析 11项可能与FM有关的因素。结果 ①连续出生 2 0 4例新生儿中 33例为FM (16 % ) ,SGA组中FM的发生率 (6 6 % )高于适于胎龄儿组 (5 9% ) (χ2 =6 9 9,P <0 0 1)。②在α =0 0 5的水准上 ,非条件Logistic回归模型选入新生儿体重、头围和母亲的文化程度三个因素 ,它们的回归系数均为负值。结论 SGA易发生FM ,新生儿体重低。

Objective To investigate the incidence of fetal malnutrition(FM), its affected factors and their relationship with small-for gestational-age(SGA) fetus.Methods The intrauterinal growth of fetus was evaluated by the body weight of neonates and FM was detected by clinical assessment of nutritional status(CANS).Results ①33 out of 204 cases were found to be FM(16%). FM in SGA group was significantly higher than that in AGA group(5 9%)(χ 2=69 9, P<0 01). ② When α=0 05, the body weight and head circumference of neonates, the education level of mothers were included into logistic regression model, and their regression coefficient were negative.Conclusion SGA was supposed to be two of the risk factors in developing FM. Fetus with low body weight, small head circumference and not-so-well educated mother were prone to suffer from FM.