Blucker Ryan T, Gillaspy J Arthur, Jackson Dennis, Hetherington Carla, Kyler Kathy, Cherry Amy, McCaffree Mary Anne, Gillaspy Stephen R
Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City (Drs Blucker, Cherry, McCaffree, and S. R. Gillaspy, and Mss Hetherington and Kyler); Department of Psychology and Counseling, University of Central Arkansas, Conway (Dr J. A. Gillaspy); and Department of Psychology, University of Windsor, Ontario, Canada (Dr Jackson).
Adv Neonatal Care. 2014 Dec;14(6):424-32. doi: 10.1097/ANC.0000000000000135.
The purpose of this research was to examine the construct validity of scores from the Postpartum Depression Screening Scale administered to mothers of infants in a neonatal intensive care unit.
Two samples (n = 385 and n = 110) of mothers with infants in a neonatal intensive care unit in the south-central region of the United States completed the Postpartum Depression Screening Scale 2 weeks postpartum. Both samples were similar in race and education level but differed according to marital status.
Study 1 was retrospective and descriptive, whereas study 2 was prospective and descriptive.
In study 1, confirmatory factor analysis was used to evaluate the originally proposed 7-factor structure and a 1-factor model. Because of overly high correlations between 3 of the factors, a revised 5-factor model was also tested. In study 2, confirmatory factor analysis was again used to test the construct validity or goodness of fit of the 7-factor and 5-factor models.
Goodness-of-fit indices and factor pattern coefficients.
In study 1, high correlations between 3 of the factors in the 7-factor model did not converge. Thus, a 5-factor model was also tested. This model had reasonable fit: χ= 1339.70 (550); P < 0.01; comparative fit index = 0.85; root mean square error of approximation = 0.06; and 90% confidence interval for root mean square error of approximation = 0.058 to 0.067. In study 2, confirmatory factor analysis was again used to test the construct validity or goodness of fit of the 7-factor and 5-factor models. Results for the 7-factor model indicated unacceptable fit: χ (539) = 959.10; P < 0.01; comparative fit index = 0.76; and root mean square error of approximation = 0.09. The 5-factor model was also poor: χ (550) = 992.95; P < 0.01; comparative fit index = 0.75; and root mean square error of approximation = 0.09.
Although the construct validity of the 7-factor model of the PDSS was not supported for this sample of mothers, additional factor analytic work was used to develop and provide initial validation of a 5-factor model. Future research should continue to explore the unique experiences of mothers in the NICU who experience postpartum depression.
本研究旨在检验对新生儿重症监护病房中婴儿的母亲进行产后抑郁筛查量表评分的结构效度。
美国中南部地区一家新生儿重症监护病房的两组母亲样本（n = 385和n = 110）在产后2周完成了产后抑郁筛查量表。两组样本在种族和教育水平上相似，但婚姻状况不同。
研究1为回顾性描述性研究，而研究2为前瞻性描述性研究。
在研究1中，采用验证性因子分析来评估最初提出的7因子结构和1因子模型。由于其中3个因子之间的相关性过高，还测试了修订后的5因子模型。在研究2中，再次使用验证性因子分析来检验7因子和5因子模型的结构效度或拟合优度。
拟合优度指数和因子模式系数。
在研究1中，7因子模型中3个因子之间的高相关性未收敛。因此，也测试了5因子模型。该模型拟合合理：χ = 1339.70（550）；P < 0.01；比较拟合指数 = 0.85；近似均方根误差 = 0.06；近似均方根误差的90%置信区间 = 0.058至0.067。在研究2中，再次使用验证性因子分析来检验7因子和5因子模型的结构效度或拟合优度。7因子模型的结果表明拟合度不可接受：χ（539） = 959.10；P < 0.01；比较拟合指数 = 0.76；近似均方根误差 = 0.09。5因子模型也不理想：χ（550） = 992.95；P < 0.01；比较拟合指数 = 0.75；近似均方根误差 = 0.09。
尽管对于该母亲样本，PDSS的7因子模型的结构效度未得到支持，但通过额外的因子分析工作开发并提供了5因子模型的初步验证。未来的研究应继续探索新生儿重症监护病房中经历产后抑郁的母亲的独特经历。
