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  • Title: Comparing Treatment Effect Measurements in Narcolepsy: The Sustained Attention to Response Task, Epworth Sleepiness Scale and Maintenance of Wakefulness Test.
    Author: van der Heide A, van Schie MK, Lammers GJ, Dauvilliers Y, Arnulf I, Mayer G, Bassetti CL, Ding CL, Lehert P, van Dijk JG.
    Journal: Sleep; 2015 Jul 01; 38(7):1051-8. PubMed ID: 25902810.
    Abstract:
    STUDY OBJECTIVES: To validate the Sustained Attention to Response Task (SART) as a treatment effect measure in narcolepsy, and to compare the SART with the Maintenance of Wakefulness Test (MWT) and the Epworth Sleepiness Scale (ESS). DESIGN: Validation of treatment effect measurements within a randomized controlled trial (RCT). PATIENTS: Ninety-five patients with narcolepsy with or without cataplexy. INTERVENTIONS: The RCT comprised a double-blind, parallel-group, multicenter trial comparing the effects of 8-w treatments with pitolisant (BF2.649), modafinil, or placebo (NCT01067222). MWT, ESS, and SART were administered at baseline and after an 8-w treatment period. The severity of excessive daytime sleepiness and cataplexy was also assessed using the Clinical Global Impression scale (CGI-C). MEASUREMENTS AND RESULTS: The SART, MWT, and ESS all had good reliability, obtained for the SART and MWT using two to three sessions in 1 day. The ability to distinguish responders from nonresponders, classified using the CGI-C score, was high for all measures, with a high performance for the SART (r = 0.61) and the ESS (r = 0.54). CONCLUSIONS: The Sustained Attention to Response Task is a valid and easy-to-administer measure to assess treatment effects in narcolepsy, enhanced by combining it with the Epworth Sleepiness Scale.
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