Table 2. Skin to epidural distance based on BMI.
| BMI Classification | Mean ± SD | Range |
| <18.5Kg/m2 | 3.98± 0.73 | 3.00-5.00 |
| 18.6-24.9Kg/m2 | 4.43±0.84 | 3.00- 7.00 |
| ≥25 Kg/m2 | 4.72±0.81 | 3.50- 8.00 |
| Total | 4.60±0.83 | 3.00-8.00 |
| p- value =0.045 | ||
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