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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)
  1. SD = standard deviation