• Login
    View Item 
    •   Home
    • Research Publications
    • University of Derby Online (UDOL)
    • View Item
    •   Home
    • Research Publications
    • University of Derby Online (UDOL)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of UDORACommunitiesTitleAuthorsIssue DateSubmit DateSubjectsThis CollectionTitleAuthorsIssue DateSubmit DateSubjects

    My Account

    LoginRegister

    About and further information

    AboutOpen Access WebpagesOpen Access PolicyTake Down Policy University Privacy NoticeUniversity NewsTools for ResearchersLibraryUDo

    Statistics

    Display statistics

    Underestimation of COVID-19 cases in Japan: an analysis of RT-PCR testing for COVID-19 among 47 prefectures in Japan

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    QJM-2020-722.R1_Proof_hi.pdf
    Embargo:
    2021-06-19
    Size:
    318.4Kb
    Format:
    PDF
    Download
    Authors
    Sawano, Toyoaki
    Kotera, Yasuhiro
    Ozaki, Akihiko
    Murayama, Anju
    Tanimoto, Tetsuya
    Sah, Ranjit
    Wang, Jiwei
    Affiliation
    Fukushima Medical University, Japan
    University of Derby
    Tohoku University, Japan
    Medical Governance Research Institute, Minato-ku, Tokyo, Japan
    National Public Health Laboratory, Kathmandu, Nepal
    Fudan University, Shanghai, China
    Issue Date
    2020-06-19
    
    Metadata
    Show full item record
    Abstract
    Under the unique Japanese policy to restrict reverse transcriptase-polymerase chain reaction (RT-PCR) testing against severe acute respiratory syndrome coronavirus 2, a nationwide number of its confirmed cases and mortality remains to be low. Yet the information is lacking on geographical differences of these measures and their associated factors. Evaluation of prefecture-based geographical differences and associated predictors for the incidence and number of RT-PCR tests for COVID-19. Cross-sectional study using regression and correlation analysis. We retrieved domestic laboratory-confirmed cases, deaths, and the number of RT-PCR testing for COVID-19 from January 15 to April 6, 2020 in 47 prefectures in Japan, using publicly-available data by the Ministry of Health, Labour and Welfare. We did descriptive analyses of these three measures and identified significant predictors for the incidence and RT-PCR testing through multiple regression analyses and correlates with the number of deaths through correlation analysis. The median prefectural-level incidence and number of RT-PCR testing per 100,000 population were 1.14 and 38.6, respectively. Multiple regression analyses revealed that significant predictors for the incidence were prefectural-level population (p < 0.001) and the number of RT-PCR testing (p = 0.03); and those for RT-PCR testing were the incidence (p = 0.025), available beds (p = 0.045) and cluster infections (p = 0.034). Considering bidirectional association between the incidence and RT-PCR testing, there may have been an underdiagnosed population for the infection. The restraint policy for RT-PCR testing should be revisited to meet the increasing demand under the COVID-19 epidemic.
    Citation
    Sawano, T., Kotera, Y., Ozaki, A., Murayama, A., Tanimoto, Y., Sah, R. and Wang, J. (2020). 'Underestimation of COVID-19 cases in Japan: An analysis of RT- 4 PCR testing for COVID-19 among 47 prefectures in Japan'. QJM: An International Journal of Medicine, pp, 1-26.
    Publisher
    Oxford University Press
    Journal
    QJM: An International Journal of Medicine
    URI
    http://hdl.handle.net/10545/624958
    DOI
    10.1093/qjmed/hcaa209
    Additional Links
    https://academic.oup.com/qjmed
    https://academic.oup.com/qjmed/article/doi/10.1093/qjmed/hcaa209/5861542?searchresult=1
    Type
    Article
    Language
    en
    ISSN
    1460-2725
    EISSN
    1460-2393
    ae974a485f413a2113503eed53cd6c53
    10.1093/qjmed/hcaa209
    Scopus Count
    Collections
    University of Derby Online (UDOL)

    entitlement

     
    DSpace software (copyright © 2002 - 2021)  DuraSpace
    Quick Guide | Contact Us
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.