Characteristics of the entire study cohort and subgroups: pain groups in 1994, all responders in 2008, pain groups in 2008 and non-responders in 2008
| 1994 | 2008 | ||||||
| All (n=243*) | None/mild neck-shoulder pain (n=156*) | Moderate/severe neck-shoulder pain (n=82*) | All responders (n=149*) | None/mild neck-shoulder pain (n=76*) | Moderate/severe neck-shoulder pain (n=73*) | Non-responders (n=94*) | |
| Age 1994, mean±SD | 38.3±10.4 | 36.9±10.6 | 41.2±9.5 | 38.1±9.8 | 38.1±10.8 | 38.2±8.7 | 38.5±11.3 |
| Seniority** (years), quartiles | 4.5, 12, 20 | 5, 10, 17 | 6, 15, 24 | 6, 12, 20 | 4, 10, 17 | 7, 13, 23 | 3, 10, 20 |
| Neck-shoulder disorder 1994, proportion (95% CI) | 16.8% (12.3 to 22.2) | <1% | 47.6% (36.4 to 58.9) | 15.6% (10.2 to 22.5) | 6.6% (2.2 to 14.7) | 25.4% (15.8 to 37.1) | 18.7% (11.3 to 28.2) |
| Moderate/severe neck-shoulder pain 1994, proportion (95% CI) | 34.7% (28.7 to 41.1) | – | – | 33.8% (26.2 to 42.0) | 14.5% (7.5 to 24.4) | 54.2% (42.0 to 66.0) | 36.3% (26.4 to 47.0) |
| Comorbidity 1994–2008†, proportion (95% CI) | 15.7% (11.4 to 20.9) | 13.5% (8.5 to 19.8) | 20.7% (12.6 to 31.1) | 11.4% (6.8 to 17.6) | 7.9% (3.0 to 16.4) | 15.1% (7.8 to 25.4) | 22.6% (14.6 to 32.4) |
| Job exposure 1994–2008‡, mean (95% CI) | 29.3 (27.1 to 31.6) | 31.2 (28.5 to 34.0) | 25.3 (21.6 to 29.0) | 30.9 (28.2 to 33.7) | 31.1 (27.5 to 34.8) | 30.7 (26.5 to 34.9) | 26.8 (23.0 to 30.6) |
| Transitions 1994–2008¶, quartiles | 15, 24, 36 | 15, 27, 38 | 12, 20, 33 | 15, 26, 38 | 15, 27, 39 | 15, 25, 34 | 14, 22, 34 |
| Work status 2008¶¶, proportion (95% CI) | |||||||
| Working | 50.4% (44.0 to 56.9) | 54.5% (46.3 to 62.5) | 40.2% (29.6 to 51.7) | 52.3% (44.0 to 60.6) | 61.8% (50.0 to 72.8) | 42.5% (31.0 to 54.6) | 47.3% (36.9 to 57.9) |
| Receiving health-related benefits | 20.7% (15.7 to 26.3) | 15.4% (10.1 to 22.0) | 31.7% (21.9 to 42.9) | 20.8% (14.6 to 28.2) | 6.6% (2.2 to 14.7) | 35.6% (24.7 to 47.7) | 20.4% (12.8 to 30.1) |
| Withdrawn from labour market | 23.6% (18.4 to 29.4) | 21.8% (15.6 to 29.1) | 28.0% (18.7 to 39.1) | 21.5% (15.2 to 28.9) | 25.0% (15.8 to 36.3) | 17.8% (9.8 to 28.5) | 26.9% (18.2 to 37.1) |
↵*Missing information for a few persons in some rows. Number of responders in 2008 refers to those with information on neck-shoulder pain. **Years as sewing machine operator until 1994. †Proportions of participants who had a Charlson’s comorbidity in 1994–2008. ‡The cumulative total shoulder score from job exposure 1994–2008 rated on a 0–10 scale for each year. ¶Transitions between different income types in 1994–2008, from the DREAM registry. ¶¶Work status in week number 45 in 2008, from the DREAM registry.