Predictive models of carpal tunnel syndrome causation among VDT operators.
Carpal tunnel syndrome (CTS), a cumulative trauma disorder of the hand and wrist, is one of the most common disabling injuries experienced by video-display terminal (VDT) operators.
The purpose of this study was to develop a theoretically based operational quantitative predictive model of the risk of work-related CTS among VDT operators.
A total of 100 female VDT operators, who performed a variety of office functions, were studied at a major midwestern university.
Data were collected on job exposure, anthropometry and posture factors using questionnaires, direct observation and video-recording.
Discriminant analysis and logistic regression were performed to develop the operational models.
The results of the study indicated the following :
(1) percentage of workday working with a VDT was the most significant factor and accounted for 60% of the variance explaining the causation of musculoskeletal discomforts associated with CTS ;
(2) discriminant function with six variables (i.e. work duration, trunk incline, wrist extension, wrist ulnar deviation, overall anthropometric measure, weighted anthropometric measure) correctly classified 73% of the CTS group and 72% of the non-CTS group ;
(3) using the logistic regression model, the probabilities associated with changes in the predictive variables as affecting CTS risk are presented such that increasing the daily work duration from 1 h to 4 h increases the probability of CTS risk from 0.45 to 0.92. (...)
Mots-clés Pascal : Ecran visualisation, Exposition professionnelle, Compression, Répétition, Prédiction, Poignet, Main, Conception, Poste travail, Activité professionnelle, Canal carpien syndrome, Ergonomie, Médecine travail, Matériel(informatique), Equipement entrée sortie, Membre supérieur, Système nerveux pathologie, Nerf périphérique pathologie, Système ostéoarticulaire pathologie, Homme
Mots-clés Pascal anglais : Display screen, Occupational exposure, Compression, Repetition, Prediction, Wrist, Hand, Design, Workplace layout, Professional activity, Carpal tunnel syndrome, Ergonomics, Occupational medicine, Computer hardware, Input output equipment, Upper limb, Nervous system diseases, Peripheral nerve disease, Diseases of the osteoarticular system, Human
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0139266
Code Inist : 002B16B. Création : 21/07/1998.