Schwartz R, Moody L, Yarandi H, Anderson G C
Nurs Res. 1987 Sep-Oct;36(5):292-5.
The advantages and limitations of meta-analysis in clinical nursing research are explained and illustrated with five studies of nonnutritive sucking (NNS) in preterm infants. This article addresses steps of locating studies, systematic comparison of studies for like variables, and qualitative decisions needed before quantitative methods are applied to cumulate findings across studies. Several approaches of calculating effect size and confidence intervals were used to interpret the power of the treatment effect of NNS. On average, across the five NNS studies, NNS intervention reduced time to first bottle feeding by 2.9 days and days of hospitalization by 6.3 days.
通过五项关于早产儿非营养性吸吮（NNS）的研究，对荟萃分析在临床护理研究中的优势和局限性进行了解释和说明。本文阐述了查找研究的步骤、对类似变量进行研究的系统比较，以及在应用定量方法累积各项研究结果之前所需做出的定性决策。采用了几种计算效应量和置信区间的方法来解释NNS治疗效果的效力。在这五项NNS研究中，平均而言，NNS干预使首次奶瓶喂养时间缩短了2.9天，住院天数减少了6.3天。
