Naoya Sugiyama

Numazu, Japan

Last Updated: 09/26/2026

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Found 20 publications

An observational study on the effects of as-needed use of various antipsychotic drugs for agitation due to psychotic disorders.

An observational study on the effects of as-needed use of various antipsychotic drugs for agitation due to psychotic disorders.

Journal: International clinical psychopharmacology

Published: January 29, 2026

A multicenter, single-arm clinical trial of an assertive case management intervention for preventing suicide reattempts at psychiatric hospitals in Japan: ACTION-JP study.

A multicenter, single-arm clinical trial of an assertive case management intervention for preventing suicide reattempts at psychiatric hospitals in Japan: ACTION-JP study.

Journal: BMC psychiatry

Published: October 02, 2025

Ranking important predictors of the need for a high-acuity psychiatry unit among 2,064 inpatients admitted to psychiatric emergency hospitals: a random forest model.

Ranking important predictors of the need for a high-acuity psychiatry unit among 2,064 inpatients admitted to psychiatric emergency hospitals: a random forest model.

Journal: Frontiers in psychiatry

Published: September 27, 2023

Live two-way video versus face-to-face treatment for depression, anxiety, and obsessive-compulsive disorder: A 24-week randomized controlled trial.

Live two-way video versus face-to-face treatment for depression, anxiety, and obsessive-compulsive disorder: A 24-week randomized controlled trial.

Journal: Psychiatry and clinical neurosciences

Published: September 11, 2023

Real-world effectiveness of antipsychotic treatments in 1011 acutely hospitalized patients with schizophrenia: A one-year follow-up study.

Real-world effectiveness of antipsychotic treatments in 1011 acutely hospitalized patients with schizophrenia: A one-year follow-up study.

Journal: Asian journal of psychiatry

Published: August 30, 2021

Japanese Project for Telepsychiatry Evaluation during COVID-19: Treatment Comparison Trial (J-PROTECT): Rationale, design, and methodology.

Japanese Project for Telepsychiatry Evaluation during COVID-19: Treatment Comparison Trial (J-PROTECT): Rationale, design, and methodology.

Journal: Contemporary clinical trials

Published: June 22, 2021

Real-world effectiveness of antipsychotic monotherapy and polytherapy in 1543 patients with acute-phase schizophrenia.

Real-world effectiveness of antipsychotic monotherapy and polytherapy in 1543 patients with acute-phase schizophrenia.

Journal: Asian journal of psychiatry

Published: January 29, 2019

Psychiatric Admissions and Length of Stay During Fiscal Years 2014 and 2015 in Japan: A Retrospective Cohort Study Using a Nationwide Claims Database.

Psychiatric Admissions and Length of Stay During Fiscal Years 2014 and 2015 in Japan: A Retrospective Cohort Study Using a Nationwide Claims Database.

Journal: Journal of epidemiology

Published: September 19, 2018

The recognition and expectations of ex-inpatients of mental health services: A web-based questionnaire survey in Japan.

The recognition and expectations of ex-inpatients of mental health services: A web-based questionnaire survey in Japan.

Journal: PloS one

Published: May 02, 2018

Association of high psychiatrist staffing with prolonged hospitalization, follow-up visits, and readmission in acute psychiatric units: a retrospective cohort study using a nationwide claims database.

Association of high psychiatrist staffing with prolonged hospitalization, follow-up visits, and readmission in acute psychiatric units: a retrospective cohort study using a nationwide claims database.

Journal: Neuropsychiatric disease and treatment

Published: April 11, 2018

Timely follow-up visits after psychiatric hospitalization and readmission in schizophrenia and bipolar disorder in Japan.

Timely follow-up visits after psychiatric hospitalization and readmission in schizophrenia and bipolar disorder in Japan.

Journal: Psychiatry research

Published: March 07, 2018

Switching and augmentation strategies for antipsychotic medications in acute-phase schizophrenia: latest evidence and place in therapy.

Switching and augmentation strategies for antipsychotic medications in acute-phase schizophrenia: latest evidence and place in therapy.

Journal: Therapeutic advances in psychopharmacology

Published: June 29, 2017

Showing 1-12 of 20

Last Updated: 09/26/2026