Schraeder B D
Nurs Res. 1986 Jul-Aug;35(4):237-42.
A multivariate study investigated developmental progress in very low birth weight infants (VLBW less than or equal to 1,500 grams) during the first year of life. The subjects were 41 VLBW infants (M birth weight = 1,203 grams) who were free from congenital anomalies and appropriate for gestational age. Eighteen infants were male, 23 were female. Data were gathered from the infants' charts and during home visits when the subjects were 6 and 12 months corrected gestational age. Birth weight, intraventricular hemorrhage status, number of days supported by mechanical ventilation, number of days in the intensive care nursery, socioeconomic status, and characteristics of the childrearing environment were examined in relation to developmental progress. Data were analyzed using multiple regression analysis and cross-lagged panel analysis. Environmental factors were powerful influences accounting for 67% of the variance in development at 1 year. Cross-lagged panel analysis suggested a causal relationship between the quality of the home environment and developmental achievement at 1 year.
一项多变量研究调查了极低出生体重儿（出生体重小于或等于1500克）在出生后第一年的发育进展。研究对象为41名极低出生体重儿（平均出生体重 = 1203克），这些婴儿无先天性异常且孕周合适。其中18名婴儿为男性，23名婴儿为女性。数据收集自婴儿的病历以及在矫正胎龄6个月和12个月时进行家访期间。研究了出生体重、脑室内出血状况、机械通气支持天数、重症监护病房住院天数、社会经济状况以及育儿环境特征与发育进展之间的关系。数据采用多元回归分析和交叉滞后组分析进行分析。环境因素是强大的影响因素，占1岁时发育差异的67%。交叉滞后组分析表明家庭环境质量与1岁时的发育成就之间存在因果关系。
