| Variable | Sildenafil plus low-dose aspirin (n = 200) | Low-dose aspirin only (n = 200) | P-value* | ||
| Mean | SD | Mean | SD | ||
| Age (years) | 29.1 | 5.5 | 29.1 | 5.7 | 0.943 |
| BMI (kg/m2) | 25.62 | 5.01 | 25.70 | 4.99 | 0.883 |