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. 2010 Apr 1;33(4):449–458. doi: 10.1093/sleep/33.4.449

Figure 1.

Figure 1

Mean (SD) Endicot Work Productivity Scale (EWPS) scores in NRS cohorts, with and without DIS/DMS, and healthy volunteers.

DIS, difficulty initiating sleep; DMS, difficulty maintaining sleep; NRS, nonrestorative sleep; SD, standard deviation