Table 2. Prevalence Ratios (95% CI) of Prevalent ED by Three Vitamin D Categories (bold, denotes statistical significance), NHANES 2001-2004.
| N | ≥30 ng/mLa | 20-30 ng/mLa | <20 ng/mLa | per 10 ng/mLa Decrease in Vitamin D |
|
|---|---|---|---|---|---|
| Model 1b | 3,390 | 1 (Ref) | 1.23 (0.99-1.51) | 1.51 (1.23-1.85) | 1.20 (1.09-1.33) |
| Model 2c | 3,390 | 1 (Ref) | 1.14 (0.96-1.35) | 1.45 (1.21-1.75) | 1.17 (1.07-1.29) |
| Model 3d | 3,324 | 1 (Ref) | 1.11 (0.93-1.31) | 1.32 (1.09-1.58) | 1.12 (1.02-1.23) |
| Model 4e | 3,310 | 1 (Ref) | 1.10 (0.93-1.30) | 1.27 (1.06-1.53) | 1.11 (1.01-1.21) |
| Model 5f | 3,310 | 1 (Ref) | 1.13 (0.95-1.35) | 1.30 (1.08-1.57) | 1.12 (1.02-1.23) |
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