Table 1 Patient demographic characteristics and clinical status at baseline
Cross sectional study sample | Test-retest study sample | |||
|---|---|---|---|---|
n = | n = | |||
Female, N (%) | 115 | 79 (68.7) | 48 | 30 (62.5) |
Age in years, mean (SD) | 115 | 45.6 (9.3) | 48 | 46.2 (8.6) |
Mother tongue Norwegian, N (%) | 115 | 100 (87) | 48 | 43 (89.6) |
Educational level high, N (%) | 115 | 67 (58.2) | 48 | 30 (62.5) |
Work status, N (%) | ||||
Employed or self-employed (paid job) | 115 | 104 (90.4) | 48 | 42 (87.5) |
Working hours per week, median (range) | 111 | 37.5 (7.5–52) | 47 | 37.5 (7.5–52) |
Working days per week, median (range) | 102 | 5 (2–7) | 41 | 5 (2–6) |
Sick leave during last 4 weeks | 114 | 79 (68.7) | 48 | 33 (68.8) |
Rehabilitation, work disability | 115 | 7 (6.1) | 48 | 4 (8.4) |
Pain location, N (%) | ||||
Lower extremities | 70 (60.9) | 27 (56.3) | ||
Back | 80 (69.6) | 36 (75.0) | ||
Neck | 57 (49.6) | 17 (35.4) | ||
Upper extremities | 55 (47.8) | 15 (31.3) | ||
Pain duration in months, median (range) | 89 | 8.3 (0.2–360) | 38 | 8.6 (0.2–360) |
≤ 3 months, N (%) | 13 (14.6) | 5 (13.2) | ||
> 3 months, N (%) | 76 (85.4) | 33 (86.8) | ||
Pain severity in the last week (NRS 0–10), mean (SD) | 112 | 5.2 (2.0) | 48 | 4.9 (2.2) |
Physical Workload Questionnaire (PWQ 0–100) Heavy physical work, median (range) | 107 | 15.6 (0–82.2) | 48 | 16.7 (2.2–82.2) |
Long-lasting postures and repetitive movements, mean (SD) | 110 | 49.1 (25.6) | 48 | 49.2 (25.4) |
Mechanical exposure index (MEI 0–24), median (range) | 111 | 4 (0–20) | 47 | 4 (0–20) |
Health-related quality of life (SF-36 0–100), median (range) | ||||
Physical function | 115 | 75 (30–100) | 48 | 70 (30–95) |
General health | 115 | 57 (5–97) | 48 | 68.5 (15–97) |