Table 1 Baseline characteristics of participants within the ChiCo cohort (N = 2818)
Female (n/N, %) | 1151/2818 (40.8) |
|---|---|
Age, years (mean, SD) | 44.5 (13.7) |
Education level (n/N, %) | |
High school or less | 311/2008 (15.5) |
Vocational training | 590/2008 (29.4) |
University education | 1033/2008 (51.4) |
Other (undefined) | 74/2008 (3.7) |
Back Beliefs Questionnaire (BBQ)a, /45 (mean, SD) | 32.3 (5.9) |
Low back pain intensity, /10 (mean, SD) | 6.7 (2.1) |
Pain duration (n/N, %) | |
4 weeks or less | 1994/2818 (70.8) |
More than 4 weeks | 824/2818 (29.2) |
Low back disability, /100 (mean, SD) | 54.9 (23.9) |
Previous episodes (n/N, %) | |
None | 330/1971 (16.7) |
1–3 | 732/1971 (37.1) |
More than 3 | 909/1971 (46.1) |
Leg pain | |
No leg pain | 2000/2818 (71.0) |
Leg pain without neurologic symptoms | 653/2818 (23.2) |
Leg pain with neurologic symptoms | 165/2818 (5.9) |
Clinical suspicion of serious pathology (n/N, %) | 44/2818 (1.6) |
Previous low back imaging (n/N, %) | 1083/2818 (38.4) |
Referred for imaging (n/N, %) | 612/2818 (21.7) |