Table 1 Background characteristics of the study subjects (weighted proportion or mean) and the gender-specific prevalence of carpal tunnel syndrome, Health 2000 Survey, 2000–2001
CharacteristicMen (n = 2844)Women (n = 3410)
% or mean (95% CI)% or mean (95% CI)
Sociodemographic
    Mean age (years)50.8 (50.3 to 51.3)53.0 (52.5 to 53.4)
    Years of education11.3 (11.1 to 11.4)11.4 (11.2 to 11.4)
Lifestyle factor
    Body mass index (kg/m2)26.6 (26.5 to 26.8)25.9 (25.7 to 26.0)
    Current smoking31.5 (29.7 to 33.4)20.2 (18.6 to 21.9)
    Years of current smoking27.1 (26.2 to 28.0)23.5 (22.6 to 24.4)
    Leisure-time physical activity ⩾4 times/week25.3 (23.7 to 26.9)27.7 (26.2 to 29.3)
Psychological factor
    Somatisation (score 0–40)5.8 (5.6 to 6.1)7.5 (7.3 to 7.7)
    Moderate to severe depression (BDI-II ⩾18)4.3 (3.5 to 5.2)5.8 (4.9 to 6.7)
Occupation
    Currently held a job66.5 (64.5 to 68.3)59.1 (57.3 to 60.8)
    Years in the latest job18.1 (17.6 to 18.6)16.1 (15.7 to 16.5)
    Number of former jobs in those held a job1.94 (1.89 to 1.99)1.81 (1.76 to 1.86)
Physical work load factors in the latest job
    Working with hands above the shoulder level for at least 1 h27.9 (26.1 to 29.8)25.3 (23.8 to 26.9)
    Handling of loads heavier than 5 kg ⩾2 times/minute ⩾2 h/day26.3 (24.2 to 28.6)18.6 (17.3 to 20.1)
    Handling of loads heavier than 20 kg ⩾10 times/day29.4 (27.4 to 31.5)16.6 (15.3 to 18.0)
    Repetitive movements of the hand or wrist ⩾2 h/day48.1 (45.6 to 50.5)46.4 (44.2 to 48.5)
    Handgrip with high forces ⩾1 h/day38.2 (36.1 to 40.4)21.3 (19.7 to 23.0)
    Work with vibrating tools ⩾2 h/day17.2 (15.6 to 19.0)3.3 (2.7 to 4.0)
Carpal tunnel syndrome
    Possible or probable2.1 (1.7 to 2.8)5.3 (4.5 to 6.2)
    Probable0.6 (0.4 to 1.0)1.3 (1.0 to 1.8)
    Operated0.7 (0.5 to 1.1)1.8 (1.4 to 2.3)
  • BDI-II, Beck Depression Inventory.