From: Cumulative keyboard strokes: a possible risk factor for carpal tunnel syndrome
Risk factor | CTS. Case definition B | RR (95 % CI) |
---|---|---|
n/total (%) | ||
Sex | ||
Female | 156/381 (40.9 %) | 3.41 |
Male | 9/75 (12 %) | (1.83 – 6.37)* |
Age | ||
> = 45 years | 97/233 (41.6) | 1.31 |
< 45 years | 66/208 (31.7) | (1.02 to 1.68)** |
BMI | ||
> = 25 | 22/55 (40.0) | 1.07 |
< 25 | 134/361(37.1) | (0.75 to 1.52) |
Physical activity | ||
Yes | 45/144 (31.3) | 0.72 |
No | 89/206 (43.2) | (0.54 to 0.96)*** |
Smoking | ||
Ever-smoker | 77/181 (42.5) | 1.22 |
Non-smoker | 86/247 (34.8) | (0.96 to 1.55) |
Rheumatoid Arthritis | ||
Yes | 4/8 (50.0) | 1.38 |
No | 163/453 (36.0) | (0.68 to 2.80) |
Diabetes Mellitus | ||
Yes | 5/11 (45.5) | 1.26 |
No | 162/450 (36.0) | (0.65 to 2.44) |
Hypothyroidism | ||
Yes | 14/42 (33.3) | 0.91 |
No | 153/419 (36.5) | (0.58 to 1.42) |
Hyperthyroidism | ||
Yes | 4/14 (28.6) | 0.78 |
No | 163/447 (36.5) | (0.33 to 1.80) |
Cumulative keyboard strokes-years | ||
> =149500000 | 128/268 (47.8) | 2.60 |
<149500000 | 27/147 (18.4) | (1.80 to 3.73) * |