International Index of Erectile Function-5 scores in each age group
| Age group, years | All | Self-reporting sexual dysfunction (Group A) | No self-reporting sexual dysfunction (Group B) | Mean difference (Group A−Group B) | P value (A, B) | ||||||
| n | Mean | SD | n | Mean | SD | n | Mean | SD | |||
| 40–49 | 10 | 18.1 | 3.6 | 3 | 17.0 | 6.6 | 7 | 18.6 | 2.1 | −1.6 | 1 |
| 50–59 | 18 | 17.1 | 5.1 | 5 | 11.0 | 5.2 | 13 | 19.6 | 1.8 | −8.6 | 0.003 |
| 60–69 | 38 | 11.9 | 6.2 | 18 | 8.8 | 4.6 | 20 | 14.8 | 6.0 | −6.0 | 0.001 |
| All age groups | 66 | 14.3 | 6.1 | 26 | 10.2 | 5.4 | 40 | 17.0 | 4.9 | −6.8 | ≤0.0001 |