Table 3 Description of the study sample consisting of 412 40-yr old Danes from the general population
Sex | |
Men | 199 |
Women | 213 |
LBP some time past yr (LBPyear) | |
Yes | 284 |
No | 128 |
LBP altogether for at least 30 days past yr (LBPlong) | |
Yes | 102 |
No | 310 |
Disc degeneration (DD) | |
Yes | 214 |
No | 198 |
Disc degeneration with signs of marrow changes consistent with a vertebral inflammatory process, type 1 or type 2 lesion (VIP) | |
Yes | 73 |
No | 339 |
Smoking | |
0 cigarettes/wk | 169 |
1–19 cigarettes/wk | 172 |
≥20 cigarettes/wk | 70 |
missing data | 1 |
BMI | |
underweight | 20 |
normal weight | 214 |
overweight | 115 |
heavy overweight | 60 |
missing data | 3 |
Work | |
Mainly sitting | 89 |
Sitting/walking | 144 |
Light physical | 92 |
Hard physical | 84 |
Missing data | 3 |