The Effect of Armodafinil on Patient-Reported Functioning and Quality of Life in Patients With Excessive Sleepiness Associated With Shift Work Disorder

Abstract

To examine whether treatment with armodafinil for 6 weeks affected patient-reported overall functioning and daily quality of life compared with placebo in patients with excessive sleepiness associated with shift work disorder. This 6-week, multicenter, randomized, double-blind, placebo-controlled, parallel-group study was conducted in 45 sleep centers across the United States between February and October 2010. Patients included in the study were 18 to 65 years of age and diagnosed with excessive sleepiness associated with shift work disorder on the basis of the International Classification of Sleep Disorders: Diagnostic and Coding Manual, Second Edition and DSM-IV-TR criteria. These patients also experienced late-in-shift sleepiness between 4 AM and 8 AM (Karolinska Sleepiness Scale score ≥ 6) and were functionally impaired (Global Assessment of Functioning score < 70). Patients were administered 150 mg of armodafinil or placebo on nights worked, and efficacy measures included changes in patient-reported overall functioning (modified Sheehan Disability Scale [SDS-M]) and daily quality of life (10-question Functional Outcomes of Sleep Questionnaire [FOSQ-10]). Patients treated with armodafinil had significantly greater improvement in SDS-M composite scores at final visit (last observation carried forward) (-6.8 vs -4.5, respectively, P = .0027) than those receiving placebo. Although the armodafinil group, compared to the placebo group, showed a greater improvement in total FOSQ-10 score from baseline to final visit (+3.4 vs +2.7, respectively, P = .0775), a statistically significant improvement was observed only at week 6 (+3.6 vs +2.7, respectively, P = .0351). These findings are consistent with our previous report on clinician-rated measures of efficacy by demonstrating that armodafinil improves patient-rated functioning in patients with shift work disorder. Additionally, the current findings show for the first time that armodafinil may have benefits on quality of life after 6 weeks of treatment. ClinicalTrials.gov identifier: NCT01080807.