Fig. 2
From: Validity of an algorithm for determining sleep/wake states using FS-760 in school-aged children
Optimization of wake after sleep onset determined by the FS-760 (WASOACT). WASOACT is the total time that wake epochs determined by the FS-750 (WACT) appeared continuously for more than n epochs after sleep onset. The horizontal axis shows the n defined above. The vertical axis shows wake after sleep onset (min) defined for each n. †P < .01 and ‡P < .001, significant difference between WASOPSG and WASOACT (paired t-test). Values are expressed as mean ± SE