Table 1: Sociodemographic and clinical data of patients at admission.

All patientsFemale Male

Complete sample size24861994492
Age (M ± SD; range) 53.9 ± 14.3; 16–9153.87 ± 14.354.8 ± 14.50.77
Family status (% in relationship/married) 58.154.971.2<0.001
Education (% with A-level and higher) 26.324.035.8<0.001
Number of doctors consultations within the past 4 weeks
(M ± SD; range)
3.9 ± 3.4; 0–253.8 ± 3.24.2 ± 3.90.06
Days of sick leave in the past 12 months (M ± SD; range) 25.9 ± 56.3; 0–36523.6 ± 49.233.3 ± 74.70.03
Days admitted to hospitals within the past year (M ± SD; range) 21.4 ± 19.3; 2–7021.2 ± 20.022.2 ± 19.10.53
Length of stay at the hospital in days (M ± SD; range) 14.6 ± 3.6; 4–5414.7 ± 3.614.1 ± 3.40.001
Expectancy of improvement (%)
 (i) Very much 44.848.231.7<0.001
  (ii) Somewhat 37.435.545.0
  (iii) Unsure16.615.321.7
  (iv) Not so much1.00.71.9
  (v) Not at all0.30.40.0
Major admission diagnosis (%)
  (i) Arthritis6.77.24.7
  (ii) Fibromyalgia10.813.02.0
  (iii) Headache 11.312.17.7
  (iv) Hypertension3.42.76.3
  (v) IBD (Crohn, Colitis)4.93.99.3
  (vi) IBS3.03.31.6
  (vii) Ischemic cardiac disease1.20.54.1
  (viii) Lung diseases5.55.74.5
  (ix) Osteoarthritis9.910.57.3
  (x) Spinal Pain18.818.221.5
  (xi) Pain, others10.910.512.4
  (xii) Others13.712.518.5
Physician rated severity of disease (%)
 Very severe6.56.85.3
 Severe49.352.436.7
 Moderate 39.137.246.8
 Slight 4.23.18.7
 Minor0.90.52.5

M: mean; SD: standard deviation. For several variables, data were inconclusive. For work absenteeism, only scores from patients with full-time or part-time employment were entered.