|Document ID (ISN)||102834|
|ISSN - Serial title
||0271-3586 - American Journal of Industrial Medicine
|Convention or series no.
||Nakazawa T., Okubo Y., Suwazono Y., Kobayashi E., Komine S., Kato N., Nogawa K.
||Association between duration of daily VDT use and subjective symptoms
||Nov. 2002, Vol.42, No.5, p.421-426. 25 ref.
||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.
||occupational diseases; computer terminals; office work; hours of work; visual display terminals
||subjective assessment; Japan; symptoms; dose-response relationship; questionnaire survey; stress factors; sleep disturbances
||D - Periodical articles
|Country / State or Province||Japan|
||Ergonomics and work organization
|Broad subject area(s)
||Hours of work
Visual display terminals (VDTs)