Département de psychiatrie et d'addictologie, AP-HP, GHU Paris Nord, DMU Neurosciences, Hôpital Bichat - Claude Bernard, Paris, France.
Centre ChronoS, GHU Paris - Psychiatry & Neurosciences, Paris, France.
J Sleep Res. 2024 May;33(3):e14065. doi: 10.1111/jsr.14065. Epub 2023 Oct 17.
This psychometric pilot study aims to evaluate a new multidimensional simple scale, named the nightmare severity index (NSI) - close to the existing insomnia (ISI) and hypersomnia (HSI) severity indexes. The NSI encompasses all main dimensions of nightmare disorder, evaluating four subdimensions: frequency, emotional impact, diurnal impact, and nocturnal impact of nightmares. The NSI was completed by a total of 102 patients. The majority of the population consisted of women (64%) and outpatient individuals (76%) diagnosed with mood disorders such as depression (31%) and bipolar disorder (41%). Comorbidity with post-traumatic stress disorder (PTSD) was prevalent (44%), and psychotropic medications were commonly used (47%). Internal validity analyses indicated that the NSI was well suited for exploratory factor analysis. All items demonstrated satisfactory correlations with the factors, and the questionnaire exhibited good internal consistency (Cronbach's alpha >0.7). Higher NSI scores were observed among individuals experiencing nightmare symptoms considering the DSM-5/ICSD-3 criteria. In summary, the NSI proves to be a promising and valuable tool for clinical practice, demonstrating good acceptability, internal validity, and the ability to assess nightmare severity.
这项心理计量学的初步研究旨在评估一种新的多维简单量表，称为梦魇严重程度指数（NSI）-与现有的失眠（ISI）和嗜睡（HSI）严重程度指数相近。NSI 涵盖了梦魇障碍的所有主要维度，评估了四个亚维度：梦魇的频率、情绪影响、日间影响和夜间影响。共有 102 名患者完成了 NSI。大多数患者为女性（64%）和门诊患者（76%），诊断为情绪障碍，如抑郁症（31%）和双相情感障碍（41%）。创伤后应激障碍（PTSD）的共病率较高（44%），且经常使用精神药物（47%）。内部有效性分析表明，NSI 非常适合探索性因素分析。所有项目与各因素均呈良好相关性，问卷具有良好的内部一致性（Cronbach's alpha >0.7）。根据 DSM-5/ICSD-3 标准，出现梦魇症状的个体的 NSI 评分较高。总之，NSI 被证明是一种有前途且有价值的临床实践工具，具有良好的可接受性、内部有效性和评估梦魇严重程度的能力。
