Table 4. Prevalence Ratios (95% CI) of Prevalent ED by Vitamin D Categories (ED redefined as only “never able” vs else) (bold, denotes statistical significance), NHANES 2001-2004 [n=3390 men].
| N | ≥30 ng/mLa | 20-30 ng/mLa | <20 ng/mLa | |
|---|---|---|---|---|
| Model 1 | 3,390 | 1 (Ref) | 1.49 (0.98-2.26) | 2.11 (1.42-3.14) |
| Model 2 | 3,390 | 1 (Ref) | 1.34 (0.92-1.96) | 2.03 (1.39-2.98) |
| Model 3 | 3,324 | 1 (Ref) | 1.31 (0.89-1.93) | 1.79 (1.18-2.70) |
| Model 4 | 3,310 | 1 (Ref) | 1.28 (0.87-1.90) | 1.75 (1.15-2.66) |
| Model 5 | 3,310 | 1 (Ref) | 1.34 (0.89-2.00) | 1.80 (1.20-2.71) |
a
To convert 25(OH)D levels to nmol/L from ng/ml, multiply by 2.496.
b
Model 1 is unadjusted
c
Model 2 is adjusted for age and race/ethnicity
d
Model 3 is adjusted for Model 2 covariates and for smoking, alcohol consumption, BMI and physical activity
e
Model 4 is adjusted for Model 3 covariates and for hypertension, diabetes, hypercholesterolemia, eGFR and CRP
f
Model 5 is adjusted for Model 4 covariates and for the use of antidepressants and beta-blockers
National Health and Nutrition Examination Survey = NHANES; Erectile Dysfunction = ED; 25-hydroxyvitamin D = 25(OH)D; Body Mass Index = BMI; C-Reactive Protein = CRP; Estimated Glomerular Filtration Rate = eGFR