Characteristics of the subjects recruited and influence of risk factors of lumbar spine pathologies.

15 patients had missing information about intensity of physical demand at work, thus a total of 262 data were available. Physical job demand score used: 0 = sedentary; 1 = light; 2 = medium; 3 = heavy.
21 patient had missing information about leisure physical activity per week, thus a total of 266 data were available.
3Orthopedic conditions included: osteoarthrosis, hip, knee and hand osteoarthritis, and osteoporosis.
Subgroup 1 = patients with disc herniation alone; Subgroup 2 = patients with discopathies and/or osteochondrosis associated with disc herniation; Subgroup 3 = patients with discopathies and/or osteochondrosis without herniation; Subgroup 4 = patients with stenosis and/or spondylolisthesis.
Only significant P≤0.05 were indicated.