Table 1 Patient characteristics at baseline
From: The search for stable prognostic models in multiple imputed data sets
variable | n | (%) |
|---|---|---|
Demographic | ||
Age (years); mean (SD) | 51 | (14) |
gender (male) | 292 | (50) |
education | ||
low* | 210 | (36) |
middle | 234 | (40) |
high | 135 | (23) |
Disease characteristics | ||
shoulder complaints in the past year | 321 | (55) |
neck complaints in the past year | 252 | (43) |
duration of complaints | ||
0-6 weeks | 205 | (35) |
7-12 weeks | 139 | (24) |
> 3 months | 242 | (41) |
gradual onset (vs. acute) | 363 | (62) |
shoulder pain (0-10); mean (SD) | 4.8 | (2) |
shoulder disability (0-100); mean (SD) | 59.9 | (24) |
both shoulders afflicted | 74 | (13) |
co-morbidity | 469 | (80) |
upper extremity joint pain | 245 | (42) |
neck pain | 197 | (34) |
upper extremity joint pain | 174 | (30) |
low back pain | 139 | (24) |
high back pain | 53 | (9) |
Psychological factors | ||
psychological complaints | 55 | (9) |
pain coping (0-6); mean (SD) | 2.98 | (0.98) |
catastrophizing (0-6); mean (SD) | 2.2 | (0.8) |
internal locus of control (0-6); mean (SD) | 3.3 | (0.9) |
external locus of control(0-6); mean (SD) | 3.2 | (0.88) |
anxiety (0-6); mean (SD) | 0.3 | (1.2) |
depression (0-6); mean (SD) | 0.2 | (1.3) |
somatisation (0-6); mean (SD) | 3.3 | (4.1) |
distress (0-6); mean (SD) | 2.3 | (4.5) |
fear-avoidance (0-6); mean (SD) | 14.1 | (5.6) |
kinesophobia (0-6); mean (SD) | 3.2 | (3.5) |
Physical factors | ||
physical load at work (0-5); mean (SD) | 1.2 | (1.5) |
physical activity | ||
less active than others | 110 | (39) |
equally active | 245 | (42) |
more active | 226 | (19) |
inability to perform daily activities last year | ||
1-30 days | 184 | (31) |
1-12 months | 61 | (10) |
sporting activities | 230 | (39) |
cause of shoulder problem: sporting injury | 29 | (5) |