Table 3

Prevalent cases in 1996 and incident cases in 1997 of tension neck syndrome, rotator cuff syndrome, CTS, and having at least one MSD for the main types of work situation

MSDs
Types of work situation (number of workers)Tension neck syndrome N (%)Rotator cuff syndrome N (%)Carpal tunnel syndrome N (%)≥1 MSDs¶ N (%)
N, number of cases; PR, prevalent rate; IR, incidence rate. Incidence case = number of new cases in 1997 without the MSDs examined in 1996/100 person years. %: percentage of workers per type of work situation suffering from the MSD under review.
*PR in the type of work situation ≥2 PR for the whole sample. †PR in the type of work situation ≥1.5 PR for the whole sample. ‡ IR in the type of work situation ≥2 IR for the whole sample. §IR in the type of work situation ≥1%. ¶One 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).
Cutting
    Prevalent cases (N=21)1 (4.8)4 (19.0)*†2 (4.8)5 (23.8)
    Incident cases (N=19)0 (0)1 (5.3)§3 (15.8)§4 (21.1)§
Sewing preparation
    Prevalent cases (N=23)0 (0)0 (0)4 (11.4)4 (11.4)
    Incident cases (N=18)2 (11.1)‡1 (5.5)0 (0)2 (11.1)
Sewing
    Prevalent cases (N=67)10 (14.9)†4 (6.0)15 (22.4)26 (38.8)
    Incident cases (N=52)2 (3.8)§2 (3.8)§7 (13.5)§8 (15.4)§
Assembly preparation
    Prevalent cases (N=12)3 (25.0)3 (25.0)*†4 (33.3)†8 (66.7)†
    Incident cases (N=8)0 (0)0 (0)0 (0)0 (0)
Mechanised assembling
    Prevalent cases (N=26)1 (3.8)2 (7.7)5 (19.2)9 (34.6)
    Incident cases (N=18)2 (11.1)‡§2 (11.1)‡§3 (16.7)§7 (38.9)‡§
Manual assembling
    Prevalent cases (N=24)1 (4.2)2 (8.3)2 (8.3)5 (20.8)
    Incident cases (N=21)1 (4.8)§0 (0)4 (19.0)§4 (19.0)§
Pasting
    Prevalent cases (N=13)1 (7.7)1 (7.7)2 (15.4)6 (46.2)
    Incident cases (N=9)0 (0)0 (0)2 (22.2)§1 (11.1)§
Packing
    Prevalent cases (N=19)0 (0)1 (5.2)4 (21.1)5 (26.3)
    Incident cases (N=11)0 (0)1 (9.1)§0 (0)0 (0)
Finishing
    Prevalent cases (N=27)2 (7.4)0 (0)7 (25.9)9 (33.3)
    Incident cases (N=22)0 (0)4 (18.2)‡§4 (18.2)§4 (18.2)§
Whole sample
    Prevalent cases (N=253)19 (7.5)20 (7.9)46 (18.2)88 (34.8)
    Incident cases (N=191)7 (3.7)§21 (5.2)§23 (12.0)§35 (18.3)§