Table 1 Baseline description of the two clinical study samples of patients with low back pain (LBP)
From: Absence of low back pain in patients followed weekly over one year with automated text messages
Population | Study 1 | Study 2 |
|---|---|---|
LBP with Modic changes | Non-specific LBP | |
Number of participants | 100 | 241 |
Age mean | 46 | 38 |
Age range | 21-61 | 18-60 |
Proportion women | 68% | 54% |
Mean LBP according to Low Back Pain Rating Scale (0-30) | 18 | 18 |
Mean LBP according to Numeric Rating Scale (0-10) | 5.3 | 4.9 |
Mean leg pain according to Low Back Pain Rating Scale (0-30) | 12 | 10 |
Mean disability according to Low Back Pain Rating Scale (0-100) | 47 | 50 |
Duration of LBP at baseline (inclusion criterion) | 3-12 months | 3-12 months |
Type of occupation (mainly): | ||
Sitting | 17% | 12% |
Mostly walking | 40% | 19% |
Walking and some lifting | 23% | 28% |
Heavy work | 20% | 40% |