Table 12: Comparison of the success rates reported in the literature and percentages of this study.
| Author | Year | IO suitable patients | Interventions | Use% | Study length |
| Gazin, et al. [13] | 2010 | 39 | 9876 | 0.39% | 1 year |
| Schalk, et al. [14] | 2011 | 74 | 18615 | 0.40% | 2 years |
| Santos [15] | 2012 | 58 | 8378 | 0.69% | 2 years |
| This study (Padova) | 2016 | 89 | 16918 | 0.53% | 5 years |