Table 1.

Baseline characteristics of the study population

Baseline characteristics	Low back pain patients (n = 483)
Age [mean (SD)]	44.4 (14.0)
Gender [n (%); female]	250 (51.8)
Pain [mean (SD); Numerical Rating Scale 0–10]	6.3 (2.0)
Prior episode of LBP [n (%); yes]	351 (72.7)
Duration current LBP episode [n (%)]
0–6 weeks (acute non	241 (49.9)
6–12 weeks (sub	85 (17.6)
>12 weeks (chronic non-specific LBP)	151 (31.3)
Unknown	6 (1.2)
Paid job [n (%); yes]	353 (73.1)
Sick-leave [n (%)]
Yes	154 (31.9)
No	193 (40.0)
Not applicable	131 (27.1)
Unknown	5 (1.0)

SD standard deviation, n number, LBP low back pain