Koji Wada

ORCID: 0000-0002-7278-7514
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About
Contact & Profiles
Research Areas
  • Workplace Health and Well-being
  • Employment and Welfare Studies
  • COVID-19 epidemiological studies
  • Health disparities and outcomes
  • Hepatitis C virus research
  • Vaccine Coverage and Hesitancy
  • Influenza Virus Research Studies
  • Viral Infections and Outbreaks Research
  • Hepatitis B Virus Studies
  • Infection Control and Ventilation
  • HIV/AIDS Research and Interventions
  • HIV, Drug Use, Sexual Risk
  • Healthcare professionals’ stress and burnout
  • Global Health Care Issues
  • Respiratory viral infections research
  • Infection Control in Healthcare
  • Occupational Health and Safety Research
  • Disaster Response and Management
  • Global Maternal and Child Health
  • Data-Driven Disease Surveillance
  • Mental Health Treatment and Access
  • Virology and Viral Diseases
  • Musculoskeletal pain and rehabilitation
  • Malaria Research and Control
  • Retirement, Disability, and Employment

Pfizer (Japan)
2024

International University of Health and Welfare
2011-2022

Japan Society for Occupational Health
2011-2022

University of the Ryukyus
2009-2022

Kagoshima University
2022

Ministry of Education, Culture, Sports, Science and Technology
2020

James Cook University
2016-2019

Juntendo University
2019

National Center for Global Health and Medicine
2013-2018

Center for Global Health
2014-2017

The Japanese government instituted countermeasures against COVID-19, a pneumonia caused by the new coronavirus, in January 2020. Seeking "people's behavioral changes," which called on public to take precautionary measures or exercise self-restraint, was one of important strategies. purpose this study is investigate how and from when citizens have changed their behavior under circumstances has only requested cooperation. This uses micro data cross-sectional survey conducted an online platform...

10.1371/journal.pone.0234292 article EN cc-by PLoS ONE 2020-06-11

<b>Objective</b> To assess the temporal trends in occupation specific all causes and cause mortality Japan between 1980 2005. <b>Design</b> Longitudinal analysis of individual death certificates by last before death. Data on population age were derived from census. <b>Setting</b> Government records, Japan. <b>Participants</b> Men aged 30-59. <b>Main outcome measures</b> Age standardised rate for causes, cancers, cerebrovascular disease, ischaemic heart unintentional injuries, suicide....

10.1136/bmj.e1191 article EN cc-by-nc BMJ 2012-03-06

Amid the effects of global warming, Tokyo has become an increasingly hot city, especially during summertime. To prepare for upcoming 2020 Summer Olympics and Paralympics in Tokyo, all participants, including athletes, staff, spectators, will need to familiarize themselves with Tokyo's humid summer conditions. This paper uses wet-bulb globe temperature (WBGT) index, which estimates risk heat illness, compare climate conditions sports events past three (held Rio de Janeiro, London, Beijing)...

10.1186/s12199-017-0675-y article EN cc-by Environmental Health and Preventive Medicine 2017-09-19

During a COVID-19 outbreak on the Diamond Princess cruise ship we sampled environmental surfaces after passengers and crew vacated cabins. SARS-CoV-2 RNA was detected in 58 of 601 samples (10%) from case cabins 1-17 days were but not noncase There no difference detection proportion between symptomatic (15%, 28/189; cycle quantification [Cq], 29.79-38.86) asymptomatic cases (21%, 28/131; Cq, 26.21-38.99). No virus isolated any samples. Transmission risk patients may be similar could involved...

10.1093/infdis/jiaa437 article EN other-oa The Journal of Infectious Diseases 2020-07-17

The Center for Epidemiologic Studies Depression Scale (CES-D) is used at workplaces to screen depressive disorders. aim of this study was examine the validity CES-D depression in a workplace.The administered 2,219 workers (84.2% men; age 21-68 years) manufacturing company Japan. Concomitantly all had an interview with Mini International Neuropsychiatric Interview (MINI) as gold standard diagnosing major disorder (MDD). evaluated by receiver operating characteristic (ROC) curve.The area under...

10.1002/ajim.20403 article EN American Journal of Industrial Medicine 2006-11-09

We aimed to determine the economic impact of absenteeism and presenteeism from five conditions potentially comorbid with depressive symptoms-back or neck disorders, depression, anxiety, emotional chronic headaches, stomach bowel insomnia-among Japanese workers aged 18-59 yr. Participants 19 workplaces anonymously completed Stanford Presenteeism Scale questionnaires. identified one primary health condition determined resultant performance loss (0-100%) over previous 4-wk period. estimated...

10.2486/indhealth.2013-0016 article EN Industrial Health 2013-01-01

Although the wearing of face masks in public has not been recommended for preventing influenza, these devices are often worn many Asian countries during influenza season. In Japan, it is thought that such behavior may be an indicator other positive hygiene practices. The aim this study, therefore, was to determine if a mask associated with practices and health behaviors among Japanese adults. We initially recruited around 3,000 individuals ranging from 20 69 years age who were registered web...

10.1186/1471-2458-12-1065 article EN cc-by BMC Public Health 2012-12-01

Background The world is becoming individualized due to modernization. International migration one of the factors that lead family dissociation and a lack social support. Social support viewed as crucial factor contributes psychological well-being satisfaction with life among migrants. However, very little known about impacts on distress Therefore, we conducted this study assess association perceived Nepalese migrants, evaluated associated receiving Methods This was cross-sectional...

10.1371/journal.pone.0246271 article EN cc-by PLoS ONE 2021-02-26

Background The aim of this study was to evaluate the public health and economic impact COVID-19 booster vaccination with BNT162b2 in Japan during an Omicron-dominant period from early 2022.

10.1080/14760584.2024.2323133 article EN cc-by-nc Expert Review of Vaccines 2024-02-27

Qualitative fit testing for N95 respirators was conducted on 1271 health care workers. All male participants were fitted with a respirator. Six females, all under age 40 years, not successfully fitted. The first-choice respirator provided successful in 95.1% of the men and 85.4% women. Gender women significant factors associated fitting. These differences should be considered when implementing respiratory protection program. World Health Organization (WHO) recommends use approved by National...

10.1016/j.ajic.2007.10.014 article EN other-oa American Journal of Infection Control 2008-05-01

Physician Job Satisfaction and Working Conditions in Japan: Koji W ada , et al . Department of Preventive Medicine Public Health, Kitasato University School Objectives The aim this study was to determine factors working conditions associated with job satisfaction among physicians Japan. Methods We sent a questionnaire all the who graduated from medical school Physicians were satisfied their determined as those selected “very satisfied” “satisfied” response question: “Overall, are you your...

10.1539/joh.o8023 article EN Journal of Occupational Health 2009-05-01

The maintenance of infectivity influenza viruses on the surfaces personal protective equipment and clothing is an important factor in terms controlling viral cross-infection environment preventing contact infection. aim this study was to determine if laboratory-grown A (H1N1) virus maintained used healthcare settings.Influenza (0.5 mL) deposited surface a rubber glove, N95 particulate respirator, surgical mask made non-woven fabric, gown Dupont Tyvek, coated wooden desk, stainless steel....

10.1007/s12199-010-0149-y article EN cc-by Environmental Health and Preventive Medicine 2010-05-11

Abstract Background Hyperuricemia is prevalent in patients with chronic kidney disease (CKD). We explored the hypothesis that asymptmatic hyperuricemia may be associated new-onset CKD. Methods The participants were all male factory workers Kanagawa, Japan (n = 1,285). All over 40 years of age and had undergone annual health examinations from 1990 to 2007. Individuals a history gouty attacks excluded study. A retrospective cohort study was conducted by following estimated glomerular...

10.1186/1471-2369-12-31 article EN cc-by BMC Nephrology 2011-07-02

Prejudice and discrimination in the workplace regarding risk of transmission Hepatitis B virus (HBV) C (HCV) are increased by excess concerns due to a lack relevant knowledge. Education increase knowledge about HBV HCV their prevention could be first step reduce prejudice discrimination. This study aimed determine association between level negative attitudes toward HBV- HCV-infected colleagues among Japanese working population. An online anonymous nationwide survey involving 3,000...

10.1371/journal.pone.0076921 article EN cc-by PLoS ONE 2013-09-26

Malaria is one of the most severe public health issues that result in massive morbidity and mortality countries sub-Saharan Africa (SSA). This study aimed to determine scope household, accessibility malaria care factors associated with household Democratic Republic Congo (DRC). was a community-based cross-sectional conducted an urban rural sites which 152 households participated, including 82 70 (1029 members total). The 'malaria indicator questionnaire' (MIQ) anonymously answered by heads...

10.1186/s12936-019-2679-0 article EN cc-by Malaria Journal 2019-02-26

Abstract Background Each day, approximately 810 women die during pregnancy and childbirth 94% of the deaths take place in low middle income countries. Only 45% births South Asia are attended by skilled professionals, which is lower than that other Asian regions. Antenatal postnatal care received from providers can help prevent maternal neonatal mortality identifying pregnancy-related complications. Women’s empowerment considered to be a significant determinant health outcomes; however,...

10.1186/s12884-020-03309-9 article EN cc-by BMC Pregnancy and Childbirth 2020-10-15

Abstract The Japanese government instituted countermeasures against COVID-19, a pneumonia caused by the new coronavirus, in January 2020. Seeking “people’s behavioral changes,” which called on public to take precautionary measures or exercise self-restraint, was one of important strategies. purpose this study is investigate how and from when citizens have changed their behavior under these circumstances, where has only requested cooperation. This uses micro data cross-sectional survey...

10.1101/2020.03.31.20048876 preprint EN cc-by-nd medRxiv (Cold Spring Harbor Laboratory) 2020-04-03

An Epidemiological Study of Work‐related Violence Experienced by Physicians who Graduated from a Medical School in Japan: Mayuri A rimatsu , et al . Department Work Systems and Health, Institute Industrial Ecological Sciences, University Occupational Environmental Japan —Healthcare workers are at high risk being victim verbal physical violence perpetrated patients. There only few studies on work related among physicians. The aim this study was to determine how prevalent work‐related against...

10.1539/joh.l7142 article EN Journal of Occupational Health 2008-07-01
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