Reliability and validity of the Japanese version of the Ullanlinna Narcolepsy Scale and Swiss Narcolepsy Scale for screening Japanese individuals with narcolepsy type 1

Tanioka, Kosuke; Hirasawa, Toshiyuki; Yanagihara, Mariko; Takeuchi, Noboru; Nakayama, Hideaki; Usui, Akira; Inoue, Yuichi

doi:10.1016/j.sleep.2023.07.015

Cited by 1 publication

(3 citation statements)

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“…There were no significant differences in the ESS scores between NT1 and NT2. The study by Tanioka et al [18] demonstrated comparable results, indicating significantly higher ESS scores in patients diagnosed with NT1 and NT2 compared to those with EDS of another origin (p < 0.05).…”

Section: Discussionmentioning

confidence: 81%

“…The SNS-TR scale showed a very reliable level of internal consistency, based on the standardized items, demonstrating that the Turkish version of the SNS, the SNS-TR, had a high discriminative power for diagnosing NT1 and distinguishing NT1 from other CDH. The most recent study on the SNS was conducted by Tanioka et al [18], which assessed the validity of the Japanese versions of the Ullanlinna Narcolepsy Scale (J-UNS) and Swiss Narcolepsy Scale (J-SNS) for screening narcolepsy in the Japanese population. In this study, the J-SNS displayed 86% sensitivity and 86% specificity, while the J-UNS showed 96% sensitivity and 58% specificity.…”

Section: Table 1 (A)mentioning

confidence: 99%

“…Further validation of the SNS and sSNS on new population cohorts is needed. As described above, previous studies on the scales have so far been applied to German-, Dutch-,Turkish-and Japanese-speaking populations [1,[15][16][17][18]. The questionnaires have not been validated or tested in other languages.…”

Section: Table 1 (A)mentioning

confidence: 99%

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SPHYNCS: The Use of the Swiss Narcolepsy Scale in a New Cohort of Patients with Narcolepsy and Its Borderland and Review of the Literature

Zub,

Warncke,

van der Meer

et al. 2023

CTN

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Introduction and aims: Narcolepsy type 1 (NT1) is a central disorder of hypersomnolence (CDH) characterized by excessive daytime sleepiness and cataplexy. The Swiss Narcolepsy Scale (SNS), which includes the updated and short (sSNS) versions, has recently been introduced as a reliable diagnostic tool for identifying NT1. This study aims to assess the validity of the SNS scales in a new cohort of patients with CDH, while also introducing the French and Italian versions of the SNS and providing a summary of the existing literature on SNS. Materials and methods: The current study is based on the international Swiss Primary Hypersomnolence and Narcolepsy Cohort Study (iSPHYNCS) which aims to identify new biomarkers for CDH. Diagnostic accuracy of the SNS was assessed by calculating sensitivity, specificity, positive predictive value, and negative predictive value. Results: In our population, 108 participants with suspected CDH (including 28 NT1 patients) and 14 healthy controls completed the scale. Original SNS, updated SNS and sSNS scores showed a high sensitivity (86%, 89% and 79%, respectively) and high specificity (96%, 90% and 95%, respectively) for diagnosing NT1 compared to other CDH. The French version was completed by 5 participants, and the Italian version by 8 participants. Regarding previous studies, the SNS has now been assessed in six different populations, involving a total of 1247 subjects (including 326 with narcolepsy with cataplexy/NT1), suggesting high sensitivity (85–100%) and specificity (86–100%) of the SNS for the diagnosis of NT1. Conclusion: The SNS is a simple screening tool validated in seven languages (German, English, French, Italian, Dutch, Turkish and Japanese), demonstrating high sensitivity and specificity for the diagnosis of NT1.

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Section: Discussionmentioning

confidence: 81%

Section: Table 1 (A)mentioning

confidence: 99%