Table 3 Positive response to global question about improved erections
From: Sildenafil (Viagra) for male erectile dysfunction: a meta-analysis of clinical trial reports
| Â | Â | Number (%) with outcome | Â | ||
|---|---|---|---|---|---|
Dosing (mg) | Number of trials | Sildenafil | Placebo | Relative benefit (95% CI) | NNT (95% CI) |
25 | 3 | 192/312 (62) | 114/426 (27) | 2.3 (1.9 to 2.8) | 2.8 (2.4 to 3.5) |
50 | 5 | 378/511 (74) | 153/607 (25) | 3.0 (2.6 to 3.5) | 2.1 (1.9 to 2.3) |
100 | 5 | 415/506 (82) | 153/607 (25) | 3.3 (2.9 to 3.8) | 1.8 (1.6 to 1.9) |
200 | 2 | 152/191 (80) | 39/181 (22) | 3.7 (2.8 to 5.0) | 1.7 (1.5 to 2.0) |
Dose optimised | 5 | 411/517 (79) | 111/524 (21) | 3.8 (3.2 to 4.5) | 1.7 (1.6 to 1.9) |