Health variable | Category | Total number (% of experienced MSD;% of experienced ≥10 service days lost due to MSDs) | HR for MSD incidence (n = 652) * | HR for MSD incidence (n = 652) ** | HR for long-term MSD incidence (≥10 service days lost) (n = 194) * | HR for long-term MSD incidence (≥10 service days lost) (n = 194) ** |
---|---|---|---|---|---|---|
Body mass index1 (BMI = (kg)/(m)2) | Underweight (BMI < 18.5) | 44 (66; 20) | 1.1 (0.7-1.5) | 1.1 (0.7-1.6) | 1.1 (0.6-2.2) | 1.1 (0.5-2.2) |
 | Normal (18.5 ≤ BMI < 25.0) | 539 (67; 19) | 1 (Referent) | 1 (Referent) | 1 (Referent) | 1 (Referent) |
 | Pre-obese (25.0 ≤ BMI < 30.0) | 220 (71; 19) | 1.1 (0.9-1.3) | 1.2 (1.0-1.5) | 1.0 (0.7-1.5) | 1.1 (0.7-1.6) |
 | Obese (BMI ≥ 30.0) | 66 (82; 33) | 1.7 (1.3-2.3) | 1.8 (1.3-2.4) | 2.0 (1.3-3.2) | 1.9 (1.2-3.2) |
Waist circumference (WC, cm) | Thin (WC < 80) | 177 (64; 20) | 1.0 (0.8-1.2) | 1.0 (0.8-1.2) | 1.2 (0.8-1.8) | 1.1 (0.7-1.6) |
 | Normal (80 ≤ WC < 94) | 499 (68; 17) | 1 (Referent)) | 1 (Referent) | 1 (Referent)) | 1 (Referent) |
 | Increased (94 ≤ WC < 102) | 126 (74; 23) | 1.2 (1.0-1.5) | 1.2 (1.0-1.6) | 1.4 (0.9-2.1) | 1.3 (0.8-2.0) |
 | High (WC ≥ 102) | 91 (79; 32) | 1.6 (1.2-2.0) | 1.7 (1.3-2.2) | 2.1 (1.4-3.3) | 2.2 (1.3-3.5) |
Height (cm) | Shortest quartile (≤176) | 184 (71; 24) | 1 (Referent) | 1 (Referent) | 1 (Referent) | 1 (Referent) |
 | Second quartile (177-180) | 248 (63; 15) | 0.8 (0.7-1.0) | 0.9 (0.7-1.2) | 0.6 (0.4-0.9) | 0.7 (0.4-1.1) |
 | Third quartile (181-184) | 212 (71; 20) | 1.0 (0.8-1.3) | 1.0 (0.8-1.3) | 0.8 (0.6-1.3) | 0.8 (0.5-1.2) |
 | Tallest quartile (≥184) | 225 (72; 21) | 1.0 (0.8-1.3) | 1.1 (0.9-1.4) | 0.9 (0.6-1.3) | 0.8 (0.5-1.3) |
Self-assessed health2 | Good or very good | 500 (66; 17) | 1 (Referent) | 1 (Referent) | 1 (Referent) | 1 (Referent) |
 | Average or inferior | 434 (72; 24) | 1.3 (1.1-1.6) | 1.0 (0.9-1.3) | 1.6 (1.2-2.1) | 0.9 (0.7-1.3) |
Sum factor of musculoskeletal symptoms | Minimal symptoms3 | 305 (62; 14) | 1 (Referent) | 1 (Referent) | 1 (Referent) | 1 (Referent) |
 | Mild symptoms4 | 357 (68; 21) | 1.2 (1.0-1.5) | 1.4 (1.1-1.7) | 1.7 (1.1-2.4) | 1.9 (1.3-2.9) |
 | Clear symptoms5 | 271 (78; 28) | 1.8 (1.5-2.2) | 1.7 (1.3-2.1) | 2.4 (1.7-3.6) | 2.6 (1.7-3.9) |
Chronic disease | No | 687 (68; 21) | 1 (Referent) | 1 (Referent) | 1 (Referent) | 1 (Referent) |
 | Yes | 247 (72; 21) | 1.2 (1.0-1.4) | 1.1 (0.9-1.3) | 1.0 (0.8-1.4) | 1.1 (0.8-1.6) |
Regular medication | No | 834 (69; 21) | 1 (Referent) | 1 (Referent) | 1 (Referent) | 1 (Referent) |
 | Yes | 96 (72; 18) | 1.1 (0.9-1.4) | 1.1 (0.8-1.4) | 0.8 (0.5-1.4) | 0.7 (0.4-1.3) |
Orthopaedic surgery | Never | 858 (68; 20) | 1 (Referent) | 1 (Referent) | 1 (Referent) | 1 (Referent) |
 | Yes | 74 (73; 27) | 1.2 (0.9-1.6) | 1.1 (0.8-1.6) | 1.3 (0.8-2.1) | 1.4 (0.9-2.4) |
Chronic impairment or disability6 | No | 789 (67; 19) | 1 (Referent) | 1 (Referent) | 1 (Referent) | 1 (Referent) |
 | Yes | 140 (81; 31) | 1.6 (1.3-2.0) | 1.4 (1.1-1.7) | 1.8 (1.3-2.5) | 1.4 (0.9-2.1) |
Sports injury during last month | No | 842 (67; 20) | 1 (Referent) | 1 (Referent) | 1 (Referent) | 1 (Referent) |
 | Yes | 88 (82; 25) | 1.4 (1.1-1.8) | 1.4 (1.0-1.8) | 1.3 (0.8-2.0) | 1.2 (0.7-2.0) |