Number of persons with carpal tunnel syndrome (CTS) (diagnosis or surgery), incidence rate (IR), crude and adjusted incidence rate ratio (IRR) of CTS cases by 1-year exposure levels (intensity*duration) shown for wrist angular velocity, mean power frequency and range of motion
| Exposure variable | ||||||
| Angular velocity, °/s | 0−<20th percentile 0.01≤−<6.09 | 20th≤−40th percentile 6.09≤−7.28 | 40th≤−60th percentile 7.28≤−11.1 | 60th≤−80th percentile 11.1≤−14.5 | 80th≤−≤100th percentile 14.5≤−≤37.6 | Total |
| CTS, number of cases | 472 | 1408 | 1265 | 1748 | 1941 | 6834 |
| Person-years | 686 215 | 1 460 532 | 983 846 | 1 118 501 | 1 127 833 | 5 376 927 |
| IR* | 6.9 | 9.6 | 12.9 | 15.6 | 17.2 | 12.7 |
| IRR, crude | 1.00 (ref.) | 1.40 (1.26 to 1.56) | 1.87 (1.68 to 2.08) | 2.27 (2.05 to 2.52) | 2.50 (2.26 to 2.77) | |
| IRR, adjusted† | 1.00 (ref.) | 1.04 (0.93 to 1.16) | 1.58 (1.42 to 1.76) | 2.02 (1.82 to 2.24) | 2.31 (2.09 to 2.56) | |