Table 1

Characteristics of the eligible participants in the analysis

EDNon-EDP value
N688693
Age, years37.99±10.7534.18±8.47<0.001*
BMI, kg/m2 23.27±3.2623.37±3.480.591*
WHR0.88±0.060.88±0.060.253*
HCY, µmol/L14.97±4.1115.34±11.090.524*
Normal HCY392 (56.98%)433 (62.48%)
Hyperhomocysteinaemia296 (43.02%)260 (37.52%)0.037*
B12, pg/mL718.53±234.37688.74±229.680.015*
FA, ng/mL9.56±2.729.89±11.280.594*
Smoke
 Yes392 (56.98%)385 (55.56%)
 No296 (43.02%)308 (44.44%)0.594†
Drink
 Yes586 (85.17%)617 (89.03%)
 No102 (14.83%)76 (10.97%)0.032†
Marital status‡
 Live together595 (86.48%)578 (83.41%)
 Alone93 (13.52%)115 (16.59%)0.110†
Educational status§
 Primary19 (2.76%)5 (0.72%)
 Intermediate488 (70.93%)411 (59.39%)
 Superior181 (26.31%)276 (39.89%)<0.001†
  • Normal HCY: 5–15 µmol/L; hyperhomocysteinaemia: >15 µmol/L.

  • *Student’s t-test.

  • †χ2 test.

  • ‡Marital status was classified into living together (married or cohabitation without marriage) and alone (bachelors or bachelorhood).

  • §One participant without the information of educational status in the non-ED group.

  • BMI, body mass index; B12, vitamin B12; ED, erectile dysfunction; FA, folic acid; HCY, homocysteine; WHR, waist:hip ratio.