Table 2 At least 40% of attempts at sexual intercourse successful
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 | 122/312 (39) | 70/426 (16) | 2.6 (2.0 to 3.3) | 4.4 (3.4 to 6.2) |
50 | 5 | 269/511 (53) | 102/607 (17) | 3.3 (2.7 to 4.0) | 2.8 (2.4 to 3.3) |
100 | 5 | 272/506 (54) | 102/607 (17) | 3.3 (2.7 to 4.1) | 2.7 (2.4 to 3.2) |
200 | 2 | 106/191 (55) | 32/181 (18) | 3.1 (2.2 to 4.3) | 2.6 (2.1 to 3.5) |
Dose optimised | 3 | 227/379 (60) | 70/376 (19) | 3.2 (2.6 to 4.0) | 2.4 (2.1 to 2.9) |