Table 1. Demographic and clinical characteristics of patients. Distribution according to a prone or supine position.
| Supine | Prone | P | ||
|---|---|---|---|---|
| Number of patients | 190 | 51 | ||
| Age (years ± SD) | 48.04±12.2 | 46.7±12.5 | 0.51 | |
| BMI | 28.2±15.8 | 27.8±6.1 | 0.87 | |
| Male | 35.1% | 23.5% | 0.124 | |
| Female | 64.9% | 76.5% | ||
| ASA | ||||
| ASA I | 32.6% | 31.4% | 0.34 | |
| ASA II | 60% | 66.6% | ||
| ASA III | 7.4% | 2.0% | ||
| Stone Diameter (cm) | 32.9±11.4 | 63.5±11.6 | 0.08 | |
| Guy's Stone Score 3 | 76% (144) | 61% (31) | 0.33 | |
| Guy's Stone Score 4 | 24% (46) | 39% (20) | ||
| Number of punctures | ||||
| 1 | 69.8% | 76.4% | 0.34 | |
| 2 | 23.3% | 21.6% | ||
| 3 | 6.9% | 2% | ||
| Supra 12th puncture* | 10.5% | 25.5% | 0.01 | |
*
Statistically significant