Koji Wada
Biographic Data
| ID | 7762635 |
|---|---|
| NAME | Koji Wada |
| GIVEN NAMES | Koji |
| FAMILY NAME | Wada |
| SIGNATURE | WADA K |
| AFFILIATIONS | International University of Health and Welfare |
| ORCID | 0000-0002-7278-7514 |
| VERIFIED | Yes |
| TOTAL WORKS | 15 |
| TOTAL CITATIONS | 0 |
| WORKS AS AUTHOR | 15 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2010 |
| LATEST PUBLICATION YEAR | 2022 |
| H-INDEX | 0 |
Increased Secondary Attack Rates among the Household Contacts of Patients with the Omicron Variant of the Coronavirus Disease 2019 in Japan
This study investigated the household secondary attack rate (HSAR) of patients with coronavirus disease (COVID-19) during the omicron variant-dominant period. The HSAR of COVID-19 cases during the omicron variant-dominant period (4-20 January 2022) was calculated and compared with the delta variant-dominant period (20 August to 7 November 2021) in Itako, Japan. In Itako, all 47 and 119 samples tested during the omicron and delta variant-dominant …
Difference in Mortality Rates by Occupation in Japanese Male Workers Aged 25 to 64 Years from 1980 to 2015
This study examines the trends in mortality among Japanese working men, across various occupational categories, from 1980 to 2015. A Poisson model of trend, occupational category, and step variable was analysed for eight occupational categories separately, by cause, to explore the trends in mortality. This study found a sharp increase in mortality in the late 1990s, especially among professionals and managers. The overall trends in cancer, ischem…
Increased Secondary Attack Rate among Unvaccinated Household Contacts of Coronavirus Disease 2019 Patients with Delta Variant in Japan
This study aimed to elucidate the household secondary attack rate (HSAR) of the Delta variant in comparison to the Alpha variant, and evaluate the risk factors among unvaccinated household contacts of patients with coronavirus disease 2019 (COVID-19). We studied household contacts of index cases of COVID-19 infected with Delta (L452R mutation), Alpha (N501Y mutation), and wild strain from December 2020 through November 2021 in Itako, Japan. The H…
Occupation- and industry-specific cancer mortality among Japanese women from 1980 to 2015
To improve the health and well-being of employed Japanese women, it is crucial to monitor cancer mortality trends. Using these population-level quantitative risk estimates, industry- and occupation-specific prevention programmes can be developed to target women at higher cancer risk and enable the early detection and treatment of cancer
Does poor spousal health negatively affect own health among elderly retired Japanese couples? A 1-year follow-up study
Poor spousal health is an independent factor that negatively affects own self-rated health after 1 year among retired couples in Japan aged 65-70 years
Secondary Attack Rate among Non-Spousal Household Contacts of Coronavirus Disease 2019 in Tsuchiura, Japan, August 2020–February 2021
Household secondary attack rate (HSAR) by risk factor might have a higher transmission rate between spouses. We investigated risk factors for the HSAR among non-spousal household contacts of patients with coronavirus disease 2019 (COVID-19). We studied household contacts of index cases of COVID-19 in Tsuchiura, Japan, from August 2020 through February 2021. The HSARs of the whole household contacts and non-spousal household contacts were calculat…
Factors associated with participation in an ongoing national catch-up campaign against rubella
The ongoing Japanese test-and-vaccinate rubella program has yet to achieve its participation rate goal for 2019. Further dissemination of the government recommendation to the population is necessary, along with improvements in the accessibility of the rubella vaccination program
Differences in stroke and ischemic heart disease mortality by occupation and industry among Japanese working-aged men
Occupation- and industry-based risks for stroke and ischemic heart disease may vary among Japanese working-aged men. We examined the differences in mortality rates between stroke and ischemic heart disease by occupation and industry among employed Japanese men aged 25-59 years. In 2010, we obtained occupation- and industry-specific vital statistics data from the Japanese Ministry of Health, Labour, and Welfare dataset. We analyzed data for Japane…
Mistrust surrounding vaccination recommendations by the Japanese government
Overall, this study suggests that communication strategies for rebuilding public trust in vaccination safety need to be urgently addressed in Japan. Such protocols must consider the information sources that working-age populations are most likely to utilize in this country, as well as their general health conditions, especially among females
Associations between psychological distress and the most concerning present personal problems among working-age men in Japan
Several personal factors appear to have a greater impact on the mental health of Japanese men of working age, when compared to the influence of work tasks or duties. Asking workers directly about the problems that most concern them in life might help better identify those in need psychological support. Multidisciplinary interventions to address their life concerns will likely be necessary for solving these problems and reducing psychological dist…
Reasons for and against receiving influenza vaccination in a working age population in Japan
The reasons for receiving the influenza vaccine varied between age groups and between sexes. To heighten awareness of influenza vaccination among unvaccinated working age participants, different intervention approaches according to sex and age group may be necessary
Wearing face masks in public during the influenza season may reflect other positive hygiene practices in Japan
Overall, this study suggests that wearing a face mask in public may be associated with other personal hygiene practices and health behaviors among Japanese adults. Rather than preventing influenza itself, face mask use might instead be a marker of additional, positive hygiene practices and other favorable health behaviors in the same individuals
What has made the population of Japan healthy?
P1-458 Trends in geographic and socioeconomic disparities in municipal life expectancy in Japan
Introduction There is growing social concern about the expanding socioeconomic and health disparities that have occurred in Japan in the past 3 decades. We investigated if Japanese geographic and socioeconomic disparities in life expectancy at birth (LE) have widened in this period. Methods We used data on the LE of municipalities calculated every 5 years between 1985 and 2005. The municipality is the smallest administrative unit, for which LE da…
National survey of the association of depressive symptoms with the number of off duty and on-call, and sleep hours among physicians working in Japanese hospitals
Some physicians need some support to maintain their mental health. Physicians who do not take enough days-off, who reduced sleep hours, and who have certain number of days on-calls may develop depressive symptoms
No prominent works on this page.
National survey of the association of depressive symptoms with the number of off duty and on-call, and sleep hours among physicians working in Japanese hospitals
Some physicians need some support to maintain their mental health. Physicians who do not take enough days-off, who reduced sleep hours, and who have certain number of days on-calls may develop depressive symptoms
What has made the population of Japan healthy?
P1-458 Trends in geographic and socioeconomic disparities in municipal life expectancy in Japan
Introduction There is growing social concern about the expanding socioeconomic and health disparities that have occurred in Japan in the past 3 decades. We investigated if Japanese geographic and socioeconomic disparities in life expectancy at birth (LE) have widened in this period. Methods We used data on the LE of municipalities calculated every 5 years between 1985 and 2005. The municipality is the smallest administrative unit, for which LE da…
Wearing face masks in public during the influenza season may reflect other positive hygiene practices in Japan
Overall, this study suggests that wearing a face mask in public may be associated with other personal hygiene practices and health behaviors among Japanese adults. Rather than preventing influenza itself, face mask use might instead be a marker of additional, positive hygiene practices and other favorable health behaviors in the same individuals
Reasons for and against receiving influenza vaccination in a working age population in Japan
The reasons for receiving the influenza vaccine varied between age groups and between sexes. To heighten awareness of influenza vaccination among unvaccinated working age participants, different intervention approaches according to sex and age group may be necessary
Mistrust surrounding vaccination recommendations by the Japanese government
Overall, this study suggests that communication strategies for rebuilding public trust in vaccination safety need to be urgently addressed in Japan. Such protocols must consider the information sources that working-age populations are most likely to utilize in this country, as well as their general health conditions, especially among females
Associations between psychological distress and the most concerning present personal problems among working-age men in Japan
Several personal factors appear to have a greater impact on the mental health of Japanese men of working age, when compared to the influence of work tasks or duties. Asking workers directly about the problems that most concern them in life might help better identify those in need psychological support. Multidisciplinary interventions to address their life concerns will likely be necessary for solving these problems and reducing psychological dist…
Differences in stroke and ischemic heart disease mortality by occupation and industry among Japanese working-aged men
Occupation- and industry-based risks for stroke and ischemic heart disease may vary among Japanese working-aged men. We examined the differences in mortality rates between stroke and ischemic heart disease by occupation and industry among employed Japanese men aged 25-59 years. In 2010, we obtained occupation- and industry-specific vital statistics data from the Japanese Ministry of Health, Labour, and Welfare dataset. We analyzed data for Japane…
Does poor spousal health negatively affect own health among elderly retired Japanese couples? A 1-year follow-up study
Poor spousal health is an independent factor that negatively affects own self-rated health after 1 year among retired couples in Japan aged 65-70 years
Secondary Attack Rate among Non-Spousal Household Contacts of Coronavirus Disease 2019 in Tsuchiura, Japan, August 2020–February 2021
Household secondary attack rate (HSAR) by risk factor might have a higher transmission rate between spouses. We investigated risk factors for the HSAR among non-spousal household contacts of patients with coronavirus disease 2019 (COVID-19). We studied household contacts of index cases of COVID-19 in Tsuchiura, Japan, from August 2020 through February 2021. The HSARs of the whole household contacts and non-spousal household contacts were calculat…
Factors associated with participation in an ongoing national catch-up campaign against rubella
The ongoing Japanese test-and-vaccinate rubella program has yet to achieve its participation rate goal for 2019. Further dissemination of the government recommendation to the population is necessary, along with improvements in the accessibility of the rubella vaccination program
Increased Secondary Attack Rates among the Household Contacts of Patients with the Omicron Variant of the Coronavirus Disease 2019 in Japan
This study investigated the household secondary attack rate (HSAR) of patients with coronavirus disease (COVID-19) during the omicron variant-dominant period. The HSAR of COVID-19 cases during the omicron variant-dominant period (4-20 January 2022) was calculated and compared with the delta variant-dominant period (20 August to 7 November 2021) in Itako, Japan. In Itako, all 47 and 119 samples tested during the omicron and delta variant-dominant …
Difference in Mortality Rates by Occupation in Japanese Male Workers Aged 25 to 64 Years from 1980 to 2015
This study examines the trends in mortality among Japanese working men, across various occupational categories, from 1980 to 2015. A Poisson model of trend, occupational category, and step variable was analysed for eight occupational categories separately, by cause, to explore the trends in mortality. This study found a sharp increase in mortality in the late 1990s, especially among professionals and managers. The overall trends in cancer, ischem…
Increased Secondary Attack Rate among Unvaccinated Household Contacts of Coronavirus Disease 2019 Patients with Delta Variant in Japan
This study aimed to elucidate the household secondary attack rate (HSAR) of the Delta variant in comparison to the Alpha variant, and evaluate the risk factors among unvaccinated household contacts of patients with coronavirus disease 2019 (COVID-19). We studied household contacts of index cases of COVID-19 infected with Delta (L452R mutation), Alpha (N501Y mutation), and wild strain from December 2020 through November 2021 in Itako, Japan. The H…
Occupation- and industry-specific cancer mortality among Japanese women from 1980 to 2015
To improve the health and well-being of employed Japanese women, it is crucial to monitor cancer mortality trends. Using these population-level quantitative risk estimates, industry- and occupation-specific prevention programmes can be developed to target women at higher cancer risk and enable the early detection and treatment of cancer
Medicine (15 works) · Demography (13 works) · Demography (12 works) · Environmental health (10 works) · Internal Medicine (10 works) · Population (8 works) · Biostatistics (6 works) · Disease (6 works) · Public health (6 works) · Nursing (5 works)