Reliability and validity of the Chinese version of the Nightmare disorder index in adolescents.
Yun‐Yue Zhuang, Lei-Lei Wang, Tian‐He Song, Jessica R. Dietch, Ting-Ting Wang, Meng Qi, Jin-Meng Liu, Shuang-Jiang Zhou, Jing-Xu Chen
Stress and health : journal of the International Society for the Investigation of Stress October 1, 2023 DOI: 10.1002/smi.3228 (opens in new tab) via PubMed
Summary
AI-generated from the abstractThe Nightmare Disorder Index Chinese Version (NDI-CV) shows good psychometric properties for measuring nightmare impact in Chinese adolescents. Among 6,014 adolescents who completed the NDI-CV along with measures of nightmare distress, sleep quality, insomnia, daytime sleepiness, anxiety, and depression, the questionnaire demonstrated strong internal consistency with a Cronbach's α coefficient of 0.876. Test-retest reliability was assessed in 423 adolescents after a 2-week interval, with a correlation coefficient confidence interval of 0.675-0.977. The findings indicate the NDI-CV is a valid and reliable instrument for assessing nightmare disorder in this population.
Study at a glance
| Characteristics | Validation study Peer reviewed |
|---|---|
| Sample size | 6,014 |
| Population | Chinese adolescents |
| Duration | 2-week interval for retest |
| Topics | Dreaming |
| Keywords | Adolescents Psychometrics Rating scale Sleep disorder |
| Key finding | The Nightmare Disorder Index Chinese Version demonstrated good psychometric properties, including high internal consistency and acceptable test-retest reliability, in a sample of Chinese adolescents. |
Abstract
The Nightmare Disorder Index Questionnaire (NDI) was developed to measure the impact of nightmares. The purpose of this study was to investigate the psychometric properties of NDI among Chinese adolescents. This study investigated the validity and internal consistency of the Nightmare Disorder Index Chinese (NDI-CV) among 6014 Chinese adolescents who completed the NDI-CV, Nightmare Distress Questionnaire-Chinese Version (NDQ-CV), Pittsburgh Sleep Quality Index (PSQI), Insomnia Severity Index (ISI), Chinese Adolescent Daytime Sleepiness Scale (CADSS), Generalized Anxiety Disorder-7 Questionnaire (GAD-7), and Patient Health Questionnaire-9 (PHQ-9). In addition, we investigated the test-retest reliability of the NDI-CV among 423 adolescents who completed a retest of the NDI-CV after a 2-week interval. Finally, NDI-CV demonstrated good psychometric properties in a sample of Chinese adolescents (Cronbach's α coefficient of 0.876), and the 95% confidence interval for the 2-week retest correlation coefficient was 0.675-0.977 (p < 0.001).