摘要
目的：研究产前保健利用指标（初次产检孕周、产前检查次数）与产妇文化程度对低出生体重（LBW）风险的交互作用。方法利用昆山市2001-2009年“围产保健监测系统”的数据，将孕妇按文化程度分层（初中及以下、高中和大专及以上），对产前保健利用指标按正常体重儿组四分位法进行重新赋值，拟合logistic回归模型，以最低四分位作为参照，估计其他3个水平LBW的OR值及95%CI，通过引入乘积项，评估产前保健利用指标和产妇文化程度对LBW发生风险。结果孕妇文化程度不论分层前还是分层后，随着产前检查次数增多，新生儿LBW的风险先降后升，呈“U”形曲线趋势。与参比组相比，其中产前检查次数第三分位对LBW发生的OR值及95%CI分别为不分层组：0.48（0.35～0.64）、初中及以下组：0.55（0.32～0.95）、高中组：0.50（0.32～0.80）、大专及以上组：0.36（0.20～0.66），随着文化程度的提高OR值明显降低，产前检查次数和产妇文化程度对LBW风险有明显的交互作用（χ2＝4.6502，P＝0.0311）。未发现初次产检孕周与文化程度对LBW发生风险有交互作用（χ2＝0.9297，P＝0.3349）。结论产前检查次数与产妇文化程度对LBW发生具有协同保护作用。需要加强低文化群体的产前保健。
Objective To investigate the interaction of prenatal care indexes including weeks of initiation of prenatal care,number of prenatal care visits and maternal educational level on the risk of neonatal low birth weight （LBW）. Methods Logistic Regression Model was performed to estimate the association including the interaction with OR and 95%CI between prenatal care indexes and LBW risk in all the subjects. Three educational levels（junior high,senior high,junior college）of mothers were also assessed. New variables of the prenatal care indexes were transformed using the quartiles,according to the distribution of the original variables on pregnant women with newborns of normal birth weight. Results Whether the pregnant women were stratified by educational level,with the increasing number of prenatal care visits,LBW risk was shown a U-type tendency in different strata of educational levels,when comparing with the reference group,respectively. Compared to the baseline group,the OR and 95%CI of the third quartile on number of prenatal care visits were 0.48 （0.35-0.64）,0.55（0.32-0.95）,0.50（0.32-0.80）,0.36（0.20-0.66）in all subjects who had received educational levels as junior middle school,senior middle school or junior college degree ect., respectively. A significant interaction was shown between the number of prenatal care visits and maternal educational level on the neonatal LBW risk（χ2=4.650 2,P=0.031 1）. However,no interaction was found between the week of initiation of prenatal care and maternal educational level on the neonatal LBW risk（χ2=0.929 7,P=0.334 9）. Conclusion Data from our study indicated that there was a protective interaction on reducing the neonatal LBW risk between maternal educational level and the number of prenatal care visits,but not the weeks on the initiation of prenatal care. More prenatal care programs should be implemented among the pregnant women with lower educational level.
出处
《中华流行病学杂志》
CAS
CSCD
北大核心
2014年第5期533-536,共4页
Chinese Journal of Epidemiology
关键词
低出生体重
产前保健
文化程度
交互作用
Low birth weight
Prenatal care
Educational level
Interaction
