Demographics Associated With Stress, Severe Mental Distress, and Anxiety Symptoms During the COVID-19 Pandemic in Japan: Nationwide Cross-sectional Web-Based Survey

Haruhiko Midorikawa   ^{1, 2} , MD ;   Hirokazu Tachikawa   ³ , MD, PhD ;   Takaya Taguchi   ² , MD, PhD ;   Yuki Shiratori   ^{4, 5} , MD, PhD ;   Asumi Takahashi   ⁶ , PhD ;   Sho Takahashi   ³ , MD, PhD ;   Kiyotaka Nemoto   ⁵ , MD, PhD ;   Tetsuaki Arai   ⁵ , MD, PhD

¹ Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan

² Ibaraki Prefectural Medical Center of Psychiatry, Kasama, Japan

³ Department of Disaster and Community Psychiatry, University of Tsukuba, Tsukuba, Japan

⁴ Tsukuba University Health Center, University of Tsukuba, Tsukuba, Japan

⁵ Department of Psychiatry, University of Tsukuba, Tsukuba, Japan

⁶ School of Humanities, Hokusei Gakuen University, Sapporo, Japan