Affordable Access

Access to the full text

Chinese version of narcolepsy severity scale: a validation study

Authors
  • Ouyang, Hui1
  • Han, Fang2
  • Zheng, Qiwen3
  • Zhang, Jun1
  • 1 Peking University People’s Hospital, 11 Xizhimen South Street, Beijing, China , Beijing (China)
  • 2 Peking University People’s Hospital, Beijing, China , Beijing (China)
  • 3 Peking University Health Science Center, Beijing, China , Beijing (China)
Type
Published Article
Journal
BMC Neurology
Publisher
Springer (Biomed Central Ltd.)
Publication Date
Dec 21, 2019
Volume
19
Issue
1
Identifiers
DOI: 10.1186/s12883-019-1570-5
Source
Springer Nature
Keywords
License
Green

Abstract

BackgroundThe narcolepsy severity scale (NSS) was developed to measure the severity and consequences of symptoms in patients with narcolepsy. The scale has been validated in France, though no other studies have further validated this instrument. The current study aimed to present psychometric properties and describe the score distribution of the Chinese-NSS.MethodsOne hundred twenty-two patients with narcolepsy (41 females and 81 males; mean age 26.14 ± 15.40 years) participated in the study. All patients completed the Chinese-NSS. Cronbach’s α, item-total score correlations, exploratory factor analysis (EFA), and correlations between NSS total scores and clinical or sleep parameters were then calculated.ResultsEFA yielded a three-factor model. Internal consistency was acceptable (Cronbach’sα = 0.799). The NSS total score had significant correlations with the Epworth sleepiness score (0.447), pediatric daytime sleepiness scale (0.318), the insomnia severity index (0.592), Beck depression inventory (0.593), EurQol five dimensions-utility (0.457), EurQol five dimensions -VAS (− 0.323), the sleep disturbance scale for children (0.440), the children depression inventory (0.553), and the pediatric quality of life inventory (0.555) total scores, demonstrating acceptable convergence as predicted.ConclusionsThe current study is the first validation study of the narcolepsy severity scale in an Asian population. The findings validated the Chinese-narcolepsy severity scale in a Chinese population with acceptable psychometric properties. There are minor differences between our results and those of the original study due to cultural differences.

Report this publication

Statistics

Seen <100 times