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. 2017 Jul 7;17(11):1–172.

Table 13:

GRADE Evidence Profile for Robot-Assisted Versus Open Radical Prostatectomy for Erectile Function at 12 Months

# 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.

a

Nonrandomized studies start at low GRADE. Differences in baseline patient, cancer, or surgeon characteristics between groups may impact erectile function.

b

Even when adjusted for differences in baseline characteristics between groups, results were inconsistent.

c

Use of nonvalidated or nonstandardized assessments for dichotomous outcomes.