Table 1 Demographic characteristics of infertile men
Variables | 2011(n = 6236) | 2012(n = 8529) | 2013(n = 10,205) | 2014(n = 11,809) | 2015(n = 12,331) | 2016(n = 11,075) | 2017(n = 11,438) | P value |
|---|---|---|---|---|---|---|---|---|
Age (y) | 33(29–37) | 33(29–37) | 33(29–38) | 33(29–38) | 33(29–38) | 33(29–39) | 33(29–39) | 0.351 |
Height(m) | 1.69(1.65–1.74) | 1.70(1.66–1.76) | 1.71(1.66–1.76) | 1.69(1.65–1.75) | 1.72(1.67–1.76) | 1.70(1.65–1.74) | 1.71(1.66–1.75) | 0.218 |
Weight(kg) | 66.3(59.5–74.0) | 70.5(62.5–75.0) | 66.2(59.8–74.5) | 66.5(60.5–74.8) | 69.5(61.5–74.2) | 70.1(61.8–75.0) | 68.3(61.3–74.3) | 0.237 |
BMI (kg/m2) | 23.1(21.5–25.0) | 24.3(21.9–26.4) | 22.5(20.7–24.8) | 23.2(21.6–25.2) | 23.4(21.8–25.2) | 24.2(22.3–25.4) | 23.3(21.4–25.0) | 0.176 |
Abstinence(d) | 4(3–5) | 4(3–5) | 4(3–5) | 4(3–5) | 4(3–5) | 4(3–5) | 4(3–5) | 0.777 |
Smokers(%) | 66.5% | 65.2% | 58.9% | 61.4% | 65.6% | 62.5% | 66.1% | < 0.001 |
Drinkers(%) | 17.3% | 18.7% | 18.5% | 19.6% | 20.7% | 18.5% | 19.3% | < 0.001 |