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Document ID (ISN)102834
CIS number 03-1731
ISSN - Serial title 0271-3586 - American Journal of Industrial Medicine
Year 2002
Convention or series no.
Author(s) Nakazawa T., Okubo Y., Suwazono Y., Kobayashi E., Komine S., Kato N., Nogawa K.
Title Association between duration of daily VDT use and subjective symptoms
Bibliographic information Nov. 2002, Vol.42, No.5, p.421-426. 25 ref.
Abstract Although visual display unit (VDU) work has become a common task among office workers, surveys which would help to determine the allowable duration of daily VDU use are limited. In this study, more than 25,000 workers were investigated three times over a three-year period using a self-administered questionnaire. Physical symptoms score increased with increasing duration of daily VDU use without a threshold effect. Mental and sleep-related symptom scores of the workers using VDUs for more than five hours per day were significantly higher than those of the groups using VDUs for shorter periods. In this case, the relationship was non-linear with a threshold effect at five hours per day.
Descriptors (primary) occupational diseases; computer terminals; office work; hours of work; visual display terminals
Descriptors (secondary) subjective assessment; Japan; symptoms; dose-response relationship; questionnaire survey; stress factors; sleep disturbances
Document type D - Periodical articles
Country / State or ProvinceJapan
Subject(s) Ergonomics and work organization
Broad subject area(s) New technologies
Browse category(ies) Hours of work
Office work
Visual display terminals (VDTs)