Prevalent cases of MSDs in 1996 and 1997 and incident cases of MSDs in 1997
| Prevalent cases and PR in 1996 | Prevalent cases and PR in 1997 | Incident cases and IR in 1997 | ||||
|---|---|---|---|---|---|---|
| MSDs | N* | PR (95% CI) | N† | PR (95% CI) | N‡ | IR (95% CI) |
| N, number of cases; PR, prevalence rate; IR incidence rate. | ||||||
| *Total number of workers = 253; †total number of workers = 191; ‡number of new cases without MSD examined in 1996/100 person years. sOne (or two) or more of the nine MSDs under review (i.e. tension neck syndrome, rotator cuff syndrome, lateral epicondylitis, medial epicondylitis, cubital tunnel syndrome, radial tunnel syndrome, carpal tunnel syndrome, Guyon's canal syndrome, and hand–wrist tendinitis). | ||||||
| Tension neck syndrome | 19 | 7.5 (4.2 to 10.8) | 8 | 4.2 (1.3 to 7.1) | 7 | 3.7 (1.0 to 6.4) |
| Rotator cuff syndrome | 20 | 7.9 (4.5 to 11.3) | 18 | 9.5 (8.1 to 10.7) | 12 | 6.3 (2.9 to 9.8) |
| Medial epicondylitis | 0 | 0 (–) | 1 | 0.5 (0 to 1.5) | 0 | 0 (–) |
| Lateral epicondylitis | 5 | 2.0 (0.3 to 3.7) | 6 | 3.1 (0.6 to 5.6) | 4 | 2.1 (0.1 to 4.1) |
| Cubital tunnel syndrome | 10 | 5.2 (2.1 to 8.3) | 8 | 4.2 (1.4 to 7.0) | 5 | 2.6 (0.4 to 4.9) |
| Radial tunnel syndrome | 1 | 0.4 (0.0 to 0.8) | 2 | 1.0 (0 to 2.4) | 2 | 1.0 (0 to 2.4) |
| Carpal tunnel syndrome | 46 | 18.2 (13.3 to 23.0) | 42 | 22.0 (15.9 to 28.0) | 23 | 12.0 (7.3 to 16.7) |
| Guyon's canal syndrome | 1 | 0.4 (0.0 to 0.8) | 1 | 0.5 (0 to 1.5) | 1 | 0.5 (0 to 1.5) |
| Hand–wrist tendinitis | 6 | 2.4 (1.4 to 3.4) | 6 | 3.1 (0.6 to 5.6) | 6 | 3.1 (0.6 to 5.6) |
| ≥1 MSD§ | 88 | 34.8 (28.8 to 40.8) | 72 | 37.7 (27.3 to 48.1) | 35 | 18.3 (12.7 to 23.9) |
| ≥2 MSD§ | 21 | 8.3 (4.8 to 11.8) | 16 | 8.4 (4.4 to 12.4) | 7 | 3.7 (1.5 to 5.9) |