Neck/shoulder symptoms: Table 4 presents the
association between symptoms and risk factors.
Subjects who wear glasses reported 3.5 more neck/
shoulder symptoms in the last week than those
who do not wear glasses. Furthermore, employees
working over 2 years in the Hi-Tech company had
1.6 more symptoms in the last year than employees
who worked o2 years in the company. Subjects
who worked 410 h a day had three times more
symptoms in the last week than those who work
p10 h a day.