Report on the results of the 2023 edition of Japan’s “Sleep Deviation Index®” surveySleep Quality found to be the Key for Improving Productivity and Immunity, not Sleeping Hours

Brain Sleep, Inc. has been conducting the Sleep Deviation Value® survey of 10,000 people in 47 prefectures across Japan since 2020. 2023 marked the fourth year of the survey. The Sleep Deviation Score® is a method that comprehensively scores productivity, stress level, and risk of sleep apnea syndrome (SAS), in addition to items that directly determine sleep status, such as sleep habits and sleep debt. We will use the results of this survey to conduct various activities to further improve sleep situation in Japan.