TABLE 2.
Subgroup analysis of dietary metal intake and erectile dysfunction in national health and nutrition examination survey (NHANES) 2001–2004 before propensity score matching (PSM).
| Characteristic | OR (95% CI) | P value | ||
| Magnesium | 100 mg/day | 200 mg/day | 300 mg/day | |
|
| ||||
| Overall | 1.375 (1.069–1.769) | 1.285 (1.185–1.393) | 0.933 (0.909–0.957) | < 0.0001 |
| < 40 years | 1.488 (0.677–3.270) | 1.311 (0.982–1.750) | 1.028 (0.990–1.068) | 0.1747 |
| ≥ 40 years | 1.356 (1.013–1.816) | 1.233 (1.133–1.343) | 0.923 (0.887–0.961) | < 0.0001 |
| BMI < 25.0 kg/m2 | 1.528 (0.998–2.340) | 1.426 (1.209–1.681) | 0.959 (0.938–0.981) | < 0.0001 |
| BMI ≥ 25.0 kg/m2 | 1.356 (0.991–1.856) | 1.243 (1.133–1.363) | 0.938 (0.907–0.970) | < 0.0001 |
| Married | 1.525 (1.110–2.096) | 1.331 (1.202–1.475) | 0.952 (0.931–0.974) | < 0.0001 |
| Unmarried | 1.333 (0.891–1.994) | 1.271 (1.121–1.441) | 0.906 (0.845–0.960) | < 0.0001 |
|
| ||||
| Zinc | 10 mg/day | 20 mg/day | 30 mg/day | |
|
| ||||
| Overall | 1.152 (1.115–1.189) | 0.564 (0.479–0.664) | 0.531 (0.438–0.644) | < 0.0001 |
| < 40 years | 1.227 (1.020–1.475) | 0.909 (0.595–1.387) | 1.045 (0.597–1.825) | 0.0475 |
| ≥ 40 years | 1.075 (1.049–1.102) | 0.595 (0.491–0.719) | 0.563 (0.452–0.701) | < 0.0001 |
| BMI < 25.0 kg/m2 | 1.375 (1.265–1.493) | 0.334 (0.242–0.462) | 0.329 (0.223–0.484) | < 0.0001 |
| BMI ≥ 25.0 kg/m2 | 1.116 (1.072–1.162) | 0.690 (0.571–0.834) | 0.642 (0.521–0.804) | < 0.0001 |
| Married | 1.159 (1.114–1.206) | 0.558 (0.458–0.681) | 0.536 (0.423–0.677) | < 0.0001 |
| Unmarried | 1.161 (0.084–1.242) | 0.613 (0.459–0.817) | 0.548 (0.384–0.781) | < 0.0001 |
|
| ||||
| Copper | 1 mg/day | 2 mg/day | 3 mg/day | |
|
| ||||
| Overall | 1.250 (1.197–1.305) | 0.534 (0.458–0.622) | 0.482 (0.402–0.579) | < 0.0001 |
| < 40 years | 1.201 (0.986–1.464) | 0.864 (0.558–1.340) | 0.813 (0.445–1.485) | 0.3127 |
| ≥ 40 years | 1.175 (1.128–1.225) | 0.563 (0.470–0.674) | 0.539 (0.440–0.660) | < 0.0001 |
| BMI < 25.0 kg/m2 | 1.342 (1.225–1.471) | 0.451 (0.333–0.610) | 0.338 (0.228–0.502) | < 0.0001 |
| BMI ≥ 25.0 kg/m2 | 1.244 (1.176–1.316) | 0.566 (0.472–0.680) | 0.553 (0.447–0.684) | < 0.0001 |
| Married | 1.296 (1.216–1.381) | 0.569 (0.472–0.686) | 0.534 (0.430–0.664) | < 0.0001 |
| Unmarried | 1.241 (1.162–1.324) | 0.455 (0.338–0.613) | 0.403 (0.285–0.572) | < 0.0001 |
|
| ||||
| Selenium | 100 mcg/day | 200 mcg/day | 300 mcg/day | |
|
| ||||
| Overall | 1.121 (1.086–1.158) | 0.510 (0.430–0.606) | 0.431 (0.317–0.585) | < 0.0001 |
| < 40 years | 1.093 (0.910–1.314) | 1.050 (0.634–0.1740) | 1.049 (0.487–2.257) | 0.1210 |
| ≥ 40 years | 1.056 (1.034–1.077) | 0.548 (0.452–0.664) | 0.478 (0.342–0.668) | < 0.0001 |
| BMI < 25.0 kg/m2 | 1.147 (1.086–1.211) | 0.340 (0.240–0.481) | 0.258 (0.129–0.513) | < 0.0001 |
| BMI ≥ 25.0 kg/m2 | 1.095 (1.057–1.134) | 0.591 (0.485–0.720) | 0.514 (0.362–0.731) | < 0.0001 |
| Married | 1.118 (1.075–1.163) | 0.553 (0.451–0.678) | 0.515 (0.362–0.733) | < 0.0001 |
| Unmarried | 1.135 (1.072–1.200) | 0.452 (0.329–0.620) | 0.339 (0.189–0.611) | < 0.0001 |
CI, confidence interval; OR, odds ratio; PSM, propensity score matching.