Table 13:
# Studies (Design) | Risk of Bias | Inconsistency | Indirectness | Imprecision | Publication Bias | Upgrade Considerations | Quality |
---|---|---|---|---|---|---|---|
11 non-RCTs | Serious limitations (−1)a | Serious limitations (−1)b | No serious limitations | Serious limitations (−1)c | Undetected | None | ⊕ Very low |
Abbreviations: GRADE, Grading of Recommendations Assessment, Development, and Evaluation; RCT, randomized controlled trial.
Nonrandomized studies start at low GRADE. Differences in baseline patient, cancer, or surgeon characteristics between groups may impact erectile function.
Even when adjusted for differences in baseline characteristics between groups, results were inconsistent.
Use of nonvalidated or nonstandardized assessments for dichotomous outcomes.