Factor Analysis and Validation of the Disturbing Dream and Nightmare Severity Index in an Inpatient Sample.

IF 2.2 3区医学 Q3 CLINICAL NEUROLOGY

Behavioral Sleep Medicine Pub Date : 2024-07-01 Epub Date: 2024-02-25 DOI:10.1080/15402002.2024.2319835

Katrina A Rufino, Courtney J Bolstad, Courtney B Worley, Michelle A Patriquin, Michael R Nadorff

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引用次数: 0

Abstract

Study objectives: The Disturbing Dream and Nightmare Severity Index (DDNSI) has been used widely in research and clinical practice without psychometric evidence supporting its use in clinical samples. The present study aimed to explore and confirm the factor structure of the DDNSI in an inpatient sample. We also sought to test the measure's construct validity.

Methods: Two samples of U.S. inpatients including adult (N = 937) and adolescent (N = 274) participants provided data on nightmares (i.e. DDNSI), sleep quality (i.e. the Pittsburgh Sleep Quality Index) and related psychopathology symptoms (e.g. depression, posttraumatic stress disorder, anxiety).

Results: Exploratory and confirmatory factor analyses found the six original items of the DDNSI to load onto a single latent factor.

Conclusions: The DDNSI was found to be a valid measure of nightmare frequency and distress, as it was significantly correlated with the items related to disturbing dreams, and the DDNSI was able to differentiate between nightmares and psychopathology symptoms. Though this research comes nearly two decades after the initial creation and use of the DDNSI, it provides a foundation for the scientific rigor of previous and future studies on nightmares using the DDNSI.

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住院病人样本中 "干扰性梦境和噩梦严重程度指数 "的因子分析和验证。

研究目的：忐忑不安的梦境和噩梦严重程度指数（DDNSI）已被广泛应用于研究和临床实践中，但在临床样本中的应用却没有心理计量学证据支持。本研究旨在探索并确认住院病人样本中 DDNSI 的因子结构。我们还试图检验该测量方法的构建有效性：两个美国住院病人样本，包括成人（N = 937）和青少年（N = 274）参与者，他们提供了有关噩梦（即 DDNSI）、睡眠质量（即匹兹堡睡眠质量指数）和相关精神病理症状（如抑郁、创伤后应激障碍、焦虑）的数据：探索性和确认性因子分析发现，DDNSI 的六个原始项目被加载到一个潜在因子上：结论：研究发现，DDNSI 是衡量噩梦频率和噩梦痛苦的有效方法，因为它与噩梦相关的项目有显著的相关性，而且 DDNSI 能够区分噩梦和精神病理症状。虽然这项研究是在 DDNSI 最初创建和使用近二十年后进行的，但它为之前和未来使用 DDNSI 进行噩梦研究的科学严谨性奠定了基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Behavioral Sleep Medicine CLINICAL NEUROLOGY-PSYCHIATRY

CiteScore

7.20

自引率

3.20%

发文量

审稿时长

>12 weeks

期刊介绍： Behavioral Sleep Medicine addresses behavioral dimensions of normal and abnormal sleep mechanisms and the prevention, assessment, and treatment of sleep disorders and associated behavioral and emotional problems. Standards for interventions acceptable to this journal are guided by established principles of behavior change. Intending to serve as the intellectual home for the application of behavioral/cognitive science to the study of normal and disordered sleep, the journal paints a broad stroke across the behavioral sleep medicine landscape. Its content includes scholarly investigation of such areas as normal sleep experience, insomnia, the relation of daytime functioning to sleep, parasomnias, circadian rhythm disorders, treatment adherence, pediatrics, and geriatrics. Multidisciplinary approaches are particularly welcome. The journal’ domain encompasses human basic, applied, and clinical outcome research. Behavioral Sleep Medicine also embraces methodological diversity, spanning innovative case studies, quasi-experimentation, randomized trials, epidemiology, and critical reviews.