Table 5.
Association between HCY, B12, FA and ED along with the increased levels of these indexes
| Unadjusted | Age adjusted | Multivariate adjusted | |||||||
| OR | 95% CI | P value | OR | 95% CI | P value | OR | 95% CI | P value | |
| HCY | |||||||||
| Q1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Q2 | 1.130 | 0.838 to 1.525 | 0.422 | 1.022 | 0.753 to 1.387 | 0.887 | 1.012 | 0.744 to 1.377 | 0.938 |
| Q3 | 1.292 | 0.958 to 1.743 | 0.094 | 1.187 | 0.875 to 1.610 | 0.271 | 1.210 | 0.890 to 1.646 | 0.224 |
| Q4 | 1.276 | 0.946 to 1.720 | 0.110 | 1.091 | 0.803 to 1.483 | 0.578 | 1.103 | 0.810 to 1.502 | 0.534 |
| B12 | |||||||||
| Q1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Q2 | 0.917 | 0.680 to 1.236 | 0.569 | 0.893 | 0.659 to 1.209 | 0.464 | 0.899 | 0.662 to 1.221 | 0.496 |
| Q3 | 0.988 | 0.733 to 1.333 | 0.939 | 0.972 | 0.717 to 1.316 | 0.853 | 0.986 | 0.726 to 1.338 | 0.927 |
| Q4 | 1.452 | 1.076 to 1.961 | 0.015 | 1.299 | 0.955 to 1.765 | 0.095 | 1.286 | 0.945 to 1.752 | 0.110 |
| FA | |||||||||
| Q1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Q2 | 1.313 | 0.974 to 1.770 | 0.074 | 1.325 | 0.978 to 1.795 | 0.069 | 1.332 | 0.981 to 1.811 | 0.067 |
| Q3 | 1.300 | 0.963 to 1.755 | 0.086 | 1.243 | 0.916 to 1.687 | 0.163 | 1.286 | 0.944 to 1.751 | 0.111 |
| Q4 | 1.198 | 0.888 to 1.616 | 0.236 | 1.094 | 0.806 to 1.487 | 0.564 | 1.116 | 0.819 to 1.522 | 0.487 |
In the multinomial logistic regression, the levels of HCY, B12 and FA were divided into quartiles (Q1<25%, 25%≤Q2≤50%, 50%<Q3≤75%, Q4>75%), which were treated as the categorical dependent variables. Q1 was the reference. As a binary categorical variable, the ED was put as the ‘Factors’. Multivariate adjusted: age, BMI, WHR, smoke and drink.
BMI, body mass index; B12, vitamin B12; ED, erectile dysfunction; FA, folic acid; HCY, homocysteine; WHR, waist:hip ratio.