FACTORS ASSOCIATED WITH PREMATURE BIRTHS--MISSOURI FOLLOW-BACK SURVEY

其目的是获得更准确的信息， 低出生体重（VLBW）婴儿，<1500克，比现在可从 美国的重要记录 这一目标将通过以下方式实现： （1）向下列儿童的母亲邮寄或发放调查问卷： 极低出生体重婴儿、胎儿死亡的母亲和 中度LBW婴儿（1500-2499克）和正常出生体重婴儿 （>2500克），以获得和验证来自 产前、围产期和新生儿后期; 2）进行电话咨询 对未答复者和不完整答复者的后续访谈，以及 10%的研究母亲样本获得和/或核实关于 调查问卷; 3）制定信息提取程序 从医院和医生记录，包括其他不可用或 关于发病率、生活方式和社会经济指标的信息缺失 4）为NICHD准备编辑好的数据磁带。 此外，还将评估死亡率和随访评价结果。 这一出生队列的出生后第一年的可用数据。

The objective is to obtain more accurate information relating to the very low birth weight (VLBW) infant, <1500 grams, than is now available from the United States vital records. This objective will be accomplished by the following: 1) mailing or administering a questionnaire to mothers of VLBW infants, mothers of fetal deaths, and a sample of mothers of moderately LBW infants (1500-2499 grams) and normal birth weight infants (>2500 grams) in order to obtain and verify information from the prenatal, perinatal, and post-neonatal periods; 2) conducting telephone follow-up interviews on non-respondents and incomplete respondents, and a 10 percent sample of study mothers to obtain and/or verify information on the questionnaires; 3) developing procedures for abstracting information from hospital and physician records, including otherwise unavailable or missing information on morbidity, lifestyle, and socioeconomic indicators of the study subjects; and 4) preparing an edited data tape for NICHD. In addition, mortality and results of follow-up evaluations will be available through the first year of life for this birth cohort.