Table 1.
Descriptive statistics from magnetic resonance images from adult patients with chronic, persistent, non-traumatic low back pain (n = 174).
| Variable Description Mean |
General | Female | Male | |||
|---|---|---|---|---|---|---|
| Mean | Std. Dev. | Mean | Std. Dev. | Mean | Std. Dev. | |
| Age (years) | 47.05 | 1.55 | 48.77 | 1.50 | 45.31 | 1.58 |
| Thickness (mm) | ||||||
| L1-L2 LSFTT | 26 | 44 | 23 | 42 | 28 | 45 |
| L2-L3 LSFTT | 34 | 48 | 31 | 46 | 38 | 49 |
| L3-L4 LSFTT | 52 | 50 | 49 | 50 | 55 | 50 |
| L4-L5 LSFTT | 77 | 42 | 79 | 41 | 74 | 44 |
| L5-S1 LSFTT | 74 | 44 | 75 | 44 | 73 | 45 |
| Prevalence | Percentage | Std. Dev. | Percentage | Std. Dev. | Percentage | Std. Dev. |
| HerniaL1-L2 | 21.66 | 1.08 | 21.52 | 1.08 | 21.81 | 1.09 |
| Hernia L2-L3 (mm) | 22.76 | 1.15 | 23.20 | 1.15 | 22.31 | 1.14 |
| Hernia L3-L4 (mm) | 26.62 | 1.32 | 27.34 | 1.35 | 25.89 | 1.29 |
| Hernia L4-L5 (mm) | 29.74 | 1.35 | 31.30 | 1.38 | 28.17 | 1.31 |
| Hernia L5-S1 (mm) | 30.46 | 1.22 | 32.27 | 1.25 | 28.64 | 1.17 |
| Two or more Hernias (%) | 36 | 48 | 47 | 50.21 | 25.88 | 44.06 |
| Overall Prevalence (%) | 65 | 48 | 69 | 47 | 61 | 49 |