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| Methods | Allocation: randomised Evaluator blind | |
| Participants | N= 57 couples (50) Age=group I‐ 55.3 yr group II ‐57.2 yr Diagnosis: psychogenic erectile dysfunction Centres: USA | |
| Interventions | 1. sildenafil 50 mg (n=27) 2. sildenafil 50mg plus cognitive behavioral sex therapy (n=30) | |
| Outcomes | ‐ Dropout ‐ Persistence of erectile dysfunction ‐ IIFE | |
| Notes | ||
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment? | Low risk | A ‐ Adequate |
