Table 3.
Associations between semen parameters and urinary TCS level corrected by creatinine concentration (TCS_Cre) in each TCS_Cre tertile level.
| Semen Parameter | TCS_Cre a | |||||||
|---|---|---|---|---|---|---|---|---|
| 1st Tertile (<0.66 ng·mg−1) | 2nd Tertile (0.66–2.33 ng·mg−1) | 3rd Tertile (≥2.33 ng·mg−1) | Total N = 471 | |||||
| Adjusted-β b Coefficient (95% CI) | p-Value | Adjusted-β b Coefficient (95% CI) | p-Value | Adjusted-β b Coefficient (95% CI) | p-Value | Adjusted-β b Coefficient (95% CI) | p-Value | |
| Sperm volume (mL) | −0.16 (−0.63, 0.32) | 0.51 | −0.28 (−1.07, 0.52) | 0.50 | −0.24 (−0.50, 0.03) | 0.08 | −0.20 (−0.43, 0.02) | 0.07 |
| Concentration a (106 mL−1) | −0.21 (−0.41, −0.01) | 0.04 | 0.15 (−0.19, 0.49) | 0.40 | 0.04 (−0.09, 0.16) | 0.58 | −0.01 (−0.11, 0.08) | 0.77 |
| Total sperm count a (106) | −0.25 (−0.48, −0.02) | 0.04 | 0.03 (−0.32, 0.39) | 0.85 | −0.06 (−0.19, 0.08) | 0.40 | −0.09 (−0.20, 0.01) | 0.09 |
| Sperm motility | ||||||||
| Percentage of forward moving (%) | −0.99 (−4.74, 2.76) | 0.60 | 0.66 (−6.42, 7.74) | 0.86 | −1.55 (−3.94, 0.84) | 0.20 | −1.19 (−3.11, 0.72) | 0.22 |
| Number of forward moving (106) a | −0.35 (−0.68,−0.03) | 0.04 | −0.18 (−0.72, 0.35) | 0.50 | −0.12 (−0.28, 0.04) | 0.16 | −0.17 (−0.32,−0.02) | 0.02 |
| Sperm morphology | ||||||||
| Percentage of normal (%) | −1.64 (−3.05,−0.23) | 0.02 | 2.76 (0.25, 5.28) | 0.03 | −0.13 (−0.96, 0.70) | 0.76 | −0.39 (−1.09, 0.32) | 0.28 |
| Number of normal (106) a | −0.48 (−0.80,−0.16) | <0.01 | 0.25 (−0.24, 0.74) | 0.31 | −0.06 (−0.23, 0.12) | 0.54 | −0.14 (−0.28, 0.01) | 0.06 |
| VAP (average path Velocity μm·s−1) | −0.24 (−1.03, 0.56) | 0.56 | 0.36 (−1.02, 1.75) | 0.61 | 0.02 (−0.46, 0.51) | 0.93 | 0.03 (−0.36, 0.42) | 0.88 |
a Natural logarithm transformed; b Coefficient was adjusted for age, BMI, abstinence period, education, income, current smoking, drinking and exposure to other chemicals or heavy metals.