The predictors of attitudes in that study were nationality, sex, and duration of computer use (31).
The lack of relationship between pain and duration of computer use is further supported by the fact that severe pain does not have a better prognosis if mouse and computer work is carried out for shorter duration [ 28].
A study conducted among nurses in Kuwait showed that attitudes towards computerization were associated with educational level, computer experience, and duration of computer use whereby female respondents and those with a bachelor's degree and some computer experience indicated more positive attitudes.
Adjusted for age, sex and duration of daily computer work.
Activities during leisure time involving forceful or repetitive arm or hand movements (e.g. participation in strength training of the upper extremities and racket sports, and playing music instruments) and duration of total computer use during leisure time are assessed separately with a self-administered questionnaire.
The questionnaire assessed screen time activity using questions about the duration of television viewing (TV) or digital versatile disc viewing (DVD) and the duration of computer use, including Internet use.
In the Cosali cohort, the Borg Rating of Perceived Exertion Scale, ranging from 6 to 20 and dichotomised into less than hard exertion (6 13) and hard exertion to exhaustion (14 20), was used to study associations between hard exertion to exhaustion and daily duration of computer use.
Risk factors for MSP include demographic (gender, age) and other personal characteristics (height, smoking, tendency to somatise), and also psychosocial, organizational and physical aspects of work (duration of computer work, computing skills, awkward postures, repetitive movements, scope for regular breaks and performance of exercises) [ 7- 11].
In these studies, an arbitrary pause definition (Pd; the minimal time between two computer events to constitute a pause) is chosen and the resulting duration of computer work is estimated.
Surprisingly, a recent systematic review showed limited or conflicting evidence for work-related physical and psychosocial factors such as duration of computer and mouse use, influence at work, and job demands [ 8].
The available epidemiological evidence suggests that hand, arm, shoulder and neck symptoms are associated with the duration of computer use and, in fact, increase steadily with each hour of computer use per day [ 11].
