Emergency Visits and Hospitalization After Chat Message, Voice Call, or Video Call for Telehealth in Obstetrics and Gynecology Using Telehealth Service User Data in Japan: Cross-sectional Study

Koichi Sakakibara   ¹ , BA ;   Daisuke Shigemi   ² , MPH, MD ;   Rena Toriumi   ² , MD ;   Ai Ota   ² , PHN ;   Nobuaki Michihata   ³ , MD ;   Hideo Yasunaga   ⁴ , MD, PhD

¹ Department of Health, Behavior, and Society, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States

² Kids Public Inc, Tokyo, Japan

³ Department of Health Services Research, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan

⁴ Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, Tokyo, Japan