The pregnancy-related anxiety scale: A validity examination using Rasch analysis
The pregnancy-related anxiety scale: A validity examination using Rasch analysis
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DOI：
10.1016/j.jad.2018.04.116
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发表时间：
2018-08-15
影响因子：
6.6
通讯作者：
Medvedev, Oleg
中科院分区：
文献类型：
--
作者：
Brunton, Robyn J.;Dryer, Rachel;Medvedev, Oleg
工作背景：妊娠相关焦虑越来越被认为是一种常见的疾病，与母亲和婴儿的许多有害结果有关（例如，早产、产后抑郁症）。在心理测量的属性和/或广度现有的规模怀孕相关的焦虑的限制，突出了需要一个心理测量健全的措施，以促进有效的筛选和可能的早期干预。最近开发的怀孕相关的焦虑量表（PrAS）进行了评估，使用Rasch分析，探讨如何规模的心理测量性质可以微调。方法：一个样本的497名孕妇完成了PrAS。数据进行了Rasch分析，并使用验证性因素Analysis.Results的量表结构检查：经过轻微的修改，Rasch模型与33个项目和8个因素表现出良好的拟合，一维性和良好的针对性和内部一致性。验证性因素分析证实了最终的结构，和克朗巴赫的阿尔法表现出良好的reliability.Limitations：使用相同的样本进行所有的分析是一个潜在的限制，由于样本特定的影响的可能性。结论：Rasch分析进一步支持内部结构效度的PrAS。序数到区间评分的转换为PrAS评分的分析提供了更高的精度。Rasch的结果，加上以前的验证证据，指出PrAS是一个全面的和心理测量学上健全的筛查量表，用于妊娠相关的焦虑。PrAS为临床医生提供了筛查妊娠相关焦虑的能力。这些分量表为了解妇女与怀孕有关的焦虑及其具体关切领域提供了更多的见解，从而能够采取更有针对性的干预措施。
Background: Pregnancy-related anxiety is increasingly recognised as a common condition that is associated with many deleterious outcomes for both the mother and infant (e.g., preterm birth, postnatal depression). Limitations in the psychometric properties and/or breadth of existing scales for pregnancy-related anxiety highlight the need for a psychometrically sound measure to facilitate effective screening and possible early interventions. The recently developed Pregnancy-related Anxiety Scale (PrAS) was evaluated using Rasch analysis to explore how the scale's psychometric properties could be fine-tuned.Method: A sample of 497 pregnant women completed the PrAS. Data were subjected to Rasch analysis, and the resulting scale structure examined using Confirmatory Factor Analysis.Results: After minor modifications, the Rasch model with 33-items and 8-factors demonstrated good fit, unidimensionality and excellent targeting and internal consistency. Confirmatory Factor Analysis confirmed the final structure, and Cronbach's alpha demonstrated excellent reliability.Limitations: The use of the same sample for all analyses was a potential limitation due to the possibility of sample-specific influences.Conclusions: The Rasch analysis further supports the internal construct validity of the PrAS. Ordinal to interval score conversions provide added precision to the analysis of the PrAS scores. The Rasch results, together with previous validation evidence, point to the PrAS as a comprehensive and psychometrically sound screening scale for pregnancy-related anxiety. The PrAS offers clinicians the ability to screen for pregnancy-related anxiety. The subscales provide additional insights into a woman's pregnancy-related anxiety and her specific areas of concern, enabling more targeted interventions.