Ryo Okubo

COVID-19 Vaccine Hesitancy and Its Associated Factors in Japan

Ryo Okubo, Takashi Yoshioka, Satoko Ohfuji et al. · Vaccines · 2021 · 165 citations · Full text

Effect of bifidobacterium breve A-1 on anxiety and depressive symptoms in schizophrenia: A proof-of-concept study

Ryo Okubo, Minori Koga, Noriko Katsumata et al. · Journal of Affective Disorders · 2018 · 138 citations

Psychiatry, Psychotic Disorder, Proof-of-concept Study +8

Increase in Social Isolation during the COVID-19 Pandemic and Its Association with Mental Health: Findings from the JACSIS 2020 Study

Hiroshi Murayama, Ryo Okubo, Takahiro Tabuchi · International Journal of Environmental Research and Public Health · 2021 · 105 citations · Full text

Urbanization level and neighborhood deprivation, not COVID-19 case numbers by residence area, are associated with severe psychological distress and new-onset suicidal ideation during the COVID-19 pandemic

Ryo Okubo, Takashi Yoshioka, Tomoki Nakaya et al. · Journal of Affective Disorders · 2021 · 69 citations · Full text

Urbanization Level, Psychological Co-morbidities, Urban Health +10

Factors associated with serious psychological distress during the COVID-19 pandemic in Japan: a nationwide cross-sectional internet-based study

Takashi Yoshioka, Ryo Okubo, Takahiro Tabuchi et al. · BMJ Open · 2021 · 53 citations · Full text