Affiliations: [a] Environmental Health Research Center, Kurdistan University of Medical sciences, Sanandaj, Iran | [b] Department of Occupational Health, Faculty of Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Correspondence:
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Address for correspondence: Jamshid Khoubi, Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran. Tel.: +98 8716131465/+98 9354286339; Fax: +98 871 6625131; E-mails: jamshidkhoubi@muk.ac.ir; jamshidkhoubi@yahoo.com
Abstract: BACKGROUND:Visual Display Terminals (VDTs) are equipments in many workplaces which their use may increase the risk of visual, musculoskeletal and mental problems including insomnia. OBJECTIVE:To determine the relationship between duration of daily VDT use and insomnia among the Iranian bank tellers. METHODS:We randomly selected 382 bank tellers working with VDT. Quality of sleep and stress information were collected by Athens Insomnia Scales (AIS) and Demand-Control Model (DCM) model respectively. RESULTS:Out of 382 participants, 127 (33.2%) had sleep complaints and 255 (66.8%) had no sleep disorders. Moreover, the insomnia symptoms’ score were significantly high in the participants having more than 6 hours of daily VDT use after adjusting for multiple confounding factors (P < 0.001). There was no significant relationship between stress and insomnia. CONCLUSIONS:It seems that the low levels of stress and job satisfaction reduce the impact of VDT on sleep quality in tellers who worked less than 6 hours per day.
