Linear regression analyses for the ED and HCY, B12 and FA
| Unadjusted | Age adjusted | Multivariate adjusted | |||||||
| β | 95% CI | P value | β | 95% CI | P value | β | 95% CI | P value | |
| IIEF-5 | |||||||||
| HCY | −0.202 | −1.080 to 0.676 | 0.651 | 0.139 | −0.732 to 1.009 | 0.755 | 0.084 | −0.787 to 0.956 | 0.850 |
| Binary HCY | −0.338 | −0.817 to 0.142 | 0.167 | −0.146 | −0.622 to 0.330 | 0.548 | −0.186 | −0.663 to 0.291 | 0.444 |
| B12 | 0.048 | −0.600 to 0.696 | 0.885 | 0.212 | −0.428 to 0.852 | 0.515 | 0.404 | −0.259 to 1.068 | 0.232 |
| FA | 0.112 | −0.668 to 0.891 | 0.779 | 0.388 | −0.384 to 1.160 | 0.986 | 0.324 | −0.496 to 1.145 | 0.438 |
IIEF-5 scores were the dependent factor for the linear regression analysis. Multivariate adjusted: age, BMI, WHR, smoke and drink. Binary HCY: normal HCY (5–15 µmol/L); hyperhomocysteinaemia (>15 µmol/L).
BMI, body mass index; B12, vitamin B12; ED, erectile dysfunction; FA, folic acid; HCY, homocysteine; IIEF-5, International Index of Erectile Function; WHR, waist:hip ratio.