Table 1 At least 60% 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 | 88/312 (28) | 43/426 (10) | 3.0 (2.1 to 4.2) | 5.5 (4.2 to 8.1) |
50 | 5 | 216/511 (42) | 62/607 (10) | 4.3 (3.3 to 5.6) | 3.1 (2.7 to 3.7) |
100 | 5 | 223/506 (44) | 62/607 (10) | 4.4 (3.4 to 5.8) | 3.0 (2.6 to 3.5) |
200 | 2 | 93/191 (49) | 19/181 (10) | 4.5 (2.9 to 7.1) | 2.6 (2.2 to 3.4) |
Dose optimised | 3 | 183/379 (48) | 43/376 (11) | 4.2 (3.1 to 5.6) | 2.7 (2.3 to 3.2) |