Koji Kitajima

Shinjuku, 1628655, Japan

Last Updated: 09/26/2026

Save publications for later

Sign Up

Not sure about your diagnosis?

Check Your Symptoms

Found 12 publications

Artificial intelligence (AI)-aided clinical data management: Applications, human-in-the-loop workflows, and regulatory considerations.

Artificial intelligence (AI)-aided clinical data management: Applications, human-in-the-loop workflows, and regulatory considerations.

Journal: Global health & medicine

Published: May 07, 2026

COVID-19-specific Prefectural Hospital Bed Utilization Rate and In-hospital Mortality Among COVID-19 Patients Throughout the First 3 Years of the Pandemic in Japan.

COVID-19-specific Prefectural Hospital Bed Utilization Rate and In-hospital Mortality Among COVID-19 Patients Throughout the First 3 Years of the Pandemic in Japan.

Journal: Journal of epidemiology

Published: April 20, 2025

Predictors of in-hospital death among patients with COVID-19 aged < 65 who required invasive mechanical ventilation in Japan.

Predictors of in-hospital death among patients with COVID-19 aged < 65 who required invasive mechanical ventilation in Japan.

Journal: Respiratory medicine

Published: November 21, 2024

Serum Lactate Dehydrogenase Level One Week after Admission Is the Strongest Predictor of Prognosis of COVID-19: A Large Observational Study Using the COVID-19 Registry Japan.

Serum Lactate Dehydrogenase Level One Week after Admission Is the Strongest Predictor of Prognosis of COVID-19: A Large Observational Study Using the COVID-19 Registry Japan.

Journal: Viruses

Published: January 27, 2023

Exploring the genetic diversity of the Japanese population: Insights from a large-scale whole genome sequencing analysis.

Exploring the genetic diversity of the Japanese population: Insights from a large-scale whole genome sequencing analysis.

Journal: PLoS genetics

Published: January 21, 2023

Characteristics of hospitalized COVID-19 patients with other respiratory pathogens identified by rapid diagnostic test.

Characteristics of hospitalized COVID-19 patients with other respiratory pathogens identified by rapid diagnostic test.

Journal: Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy

Published: October 03, 2022

Evaluation of the representativeness of data in the COVID-19 Registry Japan during the first six waves of the epidemic.

Evaluation of the representativeness of data in the COVID-19 Registry Japan during the first six waves of the epidemic.

Journal: Global health & medicine

Published: April 07, 2022

Clinical characteristics of the first three waves of hospitalised patients with COVID-19 in Japan prior to the widespread use of vaccination: a nationwide observational study.

Clinical characteristics of the first three waves of hospitalised patients with COVID-19 in Japan prior to the widespread use of vaccination: a nationwide observational study.

Journal: The Lancet regional health. Western Pacific

Published: March 18, 2022

Effectiveness of remdesivir in hospitalized nonsevere patients with COVID-19 in Japan: A large observational study using the COVID-19 Registry Japan.

Effectiveness of remdesivir in hospitalized nonsevere patients with COVID-19 in Japan: A large observational study using the COVID-19 Registry Japan.

Journal: International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases

Published: January 17, 2022

Predicting respiratory failure for COVID-19 patients in Japan: a simple clinical score for evaluating the need for hospitalisation.

Predicting respiratory failure for COVID-19 patients in Japan: a simple clinical score for evaluating the need for hospitalisation.

Journal: Epidemiology and infection

Published: July 30, 2021

Evaluation of the efficacy of anticoagulation therapy in reducing mortality in a nationwide cohort of hospitalized patients with coronavirus disease in Japan.

Evaluation of the efficacy of anticoagulation therapy in reducing mortality in a nationwide cohort of hospitalized patients with coronavirus disease in Japan.

Journal: International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases

Published: May 14, 2021

Comorbidities as Risk Factors for Severe Disease in Hospitalized Elderly COVID-19 Patients by Different Age-Groups in Japan.

Comorbidities as Risk Factors for Severe Disease in Hospitalized Elderly COVID-19 Patients by Different Age-Groups in Japan.

Journal: Gerontology

Published: April 26, 2021

Showing 1-12 of 12

Last Updated: 09/26/2026