Cross-cultural Differences In Sleep Patterns And Problems in Asian School-aged Adolescents: The ACROSS Study

Sleep problems are common in adolescents. Studies have consistently demonstrated that sleep disturbances are prevalent, affecting up to 50% of this population. In this project, the investigators aim to map out sleep patterns, risk factors, and obstacles for sleep in adolescents, capturing the diversity of societal factors that shape the sleeping habits of adolescents. The investigators aim to recruit school-aged adolescents (aged 12-18 years old) in 12 countries across 15 research centres (N = 1000 per centre) to fill in the questionnaire covering sleep-wake patterns, sleep problems, mood, behavioral, daytime functioning and their attitude and perception towards sleep.

NCT Number	NCT07577882
Lead Sponsor	National University of Singapore Collaborators: Li Chiu Kong Family Sleep Assessment Unit, All India Institute of Medical Sciences, Rishikesh, Universitas Kristen Krida Wacana, Jakarta, Hermina Hospital, Manado, Brawijaya University, Malang, Indonesia, Psychology of Traffic, Urban Society, and Psychological Measurement Laboratory, Faculty of Psychology, Universitas Indonesia, Isfahan university of medical sciences, Bamdad respiratory and sleep research center, Department of Psychology, The Center for Psychobiological Research, The Max Stern Academic College of Emek Yezreel, Japanese Society of Sleep Research, Guangzhou Mental Hospital, Department of Psychosomatic Medicine, Mianyang Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Shanghai Children's Medical Center, Ewha Womans University Seoul Hospital, CHA bundang hospital/university, Soonchunhyang University Hospital, Yongin Severance Hospital, Yonsei University College of Medicine, Chang Gung Memorial Hospital and University, Sleep Society of Thailand, Vietnam Society of Sleep Medicine
Conditions	Characterise Sleep Patterns Across Asia, Examine Barriers to Sleep
Enrollment	15,000 participants
Start Date	2026-07
Primary Completion	2026-12 (estimated)
Study Completion	2026-12 (estimated)
Updated on ClinicalTrials.gov	2026-06-15