50 likes | 164 Views
Association Between duration of Daily VDT Use and Subjective Syptoms. American Journal Of Industrial Medicine 42:421-426 (2002). Introduction. Number of VDT workers increasing Need for guidelines on VDT use and time Few or none reliable and valid surveys. Materials & Methods.
E N D
Association Between duration of Daily VDT Use and Subjective Syptoms American Journal Of Industrial Medicine 42:421-426 (2002)
Introduction • Number of VDT workers increasing • Need for guidelines on VDT use and time • Few or none reliable and valid surveys
Materials & Methods • 3 yearly questionaires • Part of annual health questionaires • > 25000 workers • (Not included typical risk groups such as CAD and data entry.)
Materials & Methods 2 • Subjective symptoms • Headace, eyestrain, stiff shoulders, fatigue, etc • Sleep disorders • Disorders in initiating sleep, sleep interruptions etc • Mental symptoms • Anxiety, not getting along with colleges, depression etc
Results • Physical symptoms score elevated with incrased duration of daily VDT use. (No treshold effect.) • Mental and sleep related symptoms significantly higher when more than 5 hours VDT use per day.