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Characteristics of the study samples
| Condition | ||||||
|---|---|---|---|---|---|---|
| Control | Back Pain | Diabetes | Hypertension | Renal Insufficiency | ||
| Age (years) | [18–40[ | 97 (53.9%) | 79 (50.0%) | 15 (18.3%) | 3 (3.8%) | 12 (21.4%) |
| [40–60[ | 72 (40.0%) | 63 (39.9%) | 36 (43.9%) | 30 (37.5%) | 15 (26.8%) | |
| ≥ 60 | 11 (6.1%) | 16 (10.1%) | 31 (37.8%) | 47 (58.7%) | 29 (51.8%) | |
| Sex | Female | 107 (59.4%) | 95 (60.1%) | 45 (54.9%) | 69 (86.2%) | 32 (57.1%) |
| Male | 73 (40.6%) | 63 (39.9%) | 37 (45.1%) | 11 (13.8%) | 24 (42.9%) | |
