TABLE 5.
Subgroup analysis of dietary metal intake and erectile dysfunction in national health and nutrition examination survey (NHANES) 2001–2004 after propensity score matching (PSM).
| Characteristic | OR (95% CI) | P value | ||
| Magnesium | 100 mg/day | 200 mg/day | 300 mg/day | |
|
| ||||
| Overall | 1.012 (1.005–1.019) | 0.626 (0.503–0.780) | 0.572 (0.402–0.815) | < 0.0001 |
| < 40 years | 1.311 (0.494–3.477) | 1.244 (0.897–1.726) | 0.911 (0.780–1.064) | 0.547 |
| ≥ 40 years | 0.811 (0.571–1.153) | 1.077 (0.980–1.182) | 0.906 (0.845–0.970) | < 0.0001 |
| BMI < 25.0 kg/m2 | 0.728 (0.402–1.319) | 1.093 (0.919–1.301) | 0.867 (0.755–0.996) | 0.0011 |
| BMI ≥ 25.0 kg/m2 | 0.887 (0.583–1.347) | 1.100 (0.981–1.234) | 0.913 (0.848–0.983) | 0.0096 |
| Married | 0.755 (0.488–1.167) | 1.052 (0.933–1.186) | 0.929 (0.870–0.993) | 0.0020 |
| Unmarried | 0.976 (0.563–1.692) | 1.151 (1.010–1.313) | 0.854 (0.754–0.968) | 0.0059 |
|
| ||||
| Zinc | 10 mg/day | 20 mg/day | 30 mg/day | |
|
| ||||
| Overall | 1.048 (1.019–1.077) | 0.677 (0.545–0.841) | 0.665 (0.520–0.850) | 0.0039 |
| < 40 years | 0.997 (0.803–1.239) | 1.098 (0.617–1.954) | 1.185 (0.602–2.330) | 0.902 |
| ≥ 40 years | 1.044 (1.019–1.071) | 0.634 (0.503–0.799) | 0.606 (0.464–0.791) | 0.0010 |
| BMI < 25.0 kg/m2 | 1.035 (1.016–1.054) | 0.415 (0.263–0.655) | 0.419 (0.255–0.689) | 0.0021 |
| BMI ≥ 25.0 kg/m2 | 1.031 (0.996–1.068) | 0.779 (0.606–1.001) | 0.755 (0.566–1.007) | 0.231 |
| Married | 1.044 (1.012–1.078) | 0.672 (0.516–0.874) | 0.662 (0.493–0.888) | 0.0295 |
| Unmarried | 1.036 (0.996–1.077) | 0.669 (0.451–0.992) | 0.645 (0.397–1.047) | 0.1746 |
|
| ||||
| Copper | 1 mg/day | 2 mg/day | 3 mg/day | |
|
| ||||
| Overall | 1.119 (1.070–1.170) | 0.559 (0.451–0.692) | 0.544 (0.430–0.689) | < 0.0001 |
| < 40 years | 1.130 (0.880–1.451) | 0.842 (0.438–1.618) | 0.945 (0.442–2.022) | 0.786 |
| ≥ 40 years | 1.123 (1.073–1.175) | 0.536 (0.429–0.671) | 0.523 (0.410–0.668) | < 0.0001 |
| BMI < 25.0 kg/m2 | 1.081 (1.017–1.149) | 0.500 (0.322–0.774) | 0.422 (0.252–0.704) | 0.0095 |
| BMI ≥ 25.0 kg/m2 | 1.134 (1.069–1.204) | 0.557 (0.432–0.719) | 0.656 (0.468–0.918) | 0.0001 |
| Married | 1.149 (1.070–1.235) | 0.543 (0.419–0.703) | 0.586 (0.429–0.795) | 0.0001 |
| Unmarried | 1.100 (0.036–1.168) | 0.549 (0.373–0.802) | 0.529 (0.349–0.802) | 0.0180 |
|
| ||||
| Selenium | 100 mcg/day | 200 mcg/day | 300 mcg/day | |
|
| ||||
| Overall | 1.012 (1.005–1.019) | 0.626 (0.503–0.780) | 0.572 (0.402–0.815) | 0.0001 |
| < 40 years | 0.975 (0.774–1.227) | 1.230 (0.643–2.350) | 1.350 (0.590–3.093) | 0.885 |
| ≥ 40 years | 1.016 (1.007–1.025) | 0.578 (0.459–0.726) | 0.512 (0.348–0.752) | < 0.0001 |
| BMI < 25.0 kg/m2 | 1.003 (1.000–1.005) | 0.430 (0.280–0.662) | 0.378 (0.215–0.664) | 0.0019 |
| BMI ≥ 25.0 kg/m2 | 1.027 (1.004–1.051) | 0.782 (0.566–0.936) | 0.703 (0.459–1.077) | 0.0102 |
| Married | 1.025 (1.008–1.041) | 0.611 (0.471–0.794) | 0.586 (0.384–0.893) | 0.0031 |
| Unmarried | 0.998 (0.996–1.000) | 0.659 (0.446–0.975) | 0.570 (0.325–1.001) | 0.025 |
CI, confidence interval; OR, odds ratio; PSM, propensity score matching.