| Table 1. | |||||||||
| Main characteristics of study participants | |||||||||
| Perineal | Oximetry | ||||||||
| Group | Count | Age | Mean | SD | Median | Range | |||
| Treatment | 31 | 39.6 | 90.1 | 1.15 | 90 | 89_93 | |||
| Controls | 31 | 39.4 | 91.6 | 1.11 | 92 | 90_94 | |||
| Treatment gr | |||||||||
| Control group=healthy patients free of pain | |||||||||
| Mean, Median and Range=oximetry values expressed in % | |||||||||