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Table 1 Baseline characteristics of the study population.
| Variables Total population (n = 679) | Internal missings (n items) | ||
|---|---|---|---|
| Patient characteristics | |||
| Age (yrs) (18–64), median (range) | 0 | 45.0 (18–64) | |
| Male, n (%) | 0 | 281 (41.4) | |
| Educational levela, n (%) | low | 0 | 243 (35.8) |
| medium | 242 (35.6) | ||
| high | 194 (28.6) | ||
| Having paid work,n (%) | 0 | 532 (78.4) | |
| Active sports participation, = 1 h/week, n (%) | 0 | 302 (44.5) | |
| Complaint- specific determinants | |||
| Duration of the complaint, n (%); n = 678 | 0-6 weeks | 1 | 343 (50.6) |
| 6 weeks-6 months | 161 (23.7) | ||
| > 6 months | 174 (25.7) | ||
| Severity in the last week (0–10), median (range); n = 677 | 2 | 6 [1–10] | |
| Disability, DASH (0–100), median (range); n = 678 | 3 | 35.3 (2.6–99.1) | |
| Comorbidity musculoskeletal, n (%) | 0 | 330 (48.6) | |
| Recurrent complaint, n (%) | 0 | 191 (28.0) | |
| Multiple- sited complaint | 0 | 263 (38.7) | |
| Location†, n (%) | neck | 0 | 211 (31.1) |
| upper back | 53 (7.8) | ||
| shoulder | 374 (55.1) | ||
| upper arm | 86 (12.7) | ||
| elbow | 147 (21.6) | ||
| forearm | 41 (6.0) | ||
| wrist | 47 (6.9) | ||
| hand | 86 (12.7) | ||
| Psychosocial characteristics | |||
| Kinesiophobia, Tampa-AV 13-item scale (13–52) | median (range) | 0 | 24.0 (13–46) |
| mean (SD) | 24.8 (6.2) | ||
| Social support, SOS (12–60), median (range) | 0 | 56.0 (26–60) | |
| Catastrophizing, CSQ (0–60), median (range); n = 678 | 6 | 9.0 (0–53) | |
| Somatization, 4DSQ (0–48), n (%), n = 678 | low (0–10) | 21 | 500 (73.8) |
| medium (11–20) | 148 (21.8) | ||
| high (21–32) | 30 (4.4) | ||
| Distress, 4DSQ (0–48) n (%) | low (0–10) | 0 | 430 (63.4) |
| medium (11–20) | 170 (25.0) | ||
| high (21–32) | 79 (11.6) | ||
| Yes, I can influence my health through my own behaviour, n (%) | 0 | 401 (59.1) |
