Table 3 Multivariable linear regression by using a sperm parameter for exposure to ambient pollutants
Sperm parameters | Regression coefficients (95% confidence interval) | p value |
|---|---|---|
Sperm count | ||
 PM2.5 | 0.896 (−16.113 to 40.225) | 0.382 |
 SO2 | −0.891 (− 169.427 to 68.260) | 0.384 |
 NOx | −1.136 (− 12.614 to 3.738) | 0.270 |
 O3 | −0.196 (−18.947 to 15.698) | 0.846 |
Sperm concentration | ||
 PM2.5 | 0.109 (−13.821 to 15.340) | 0.914 |
 SO2 | −1.302 (−99.796 to 23.235) | 0.208 |
 NOx | −2.174 (−8.627 to −0.164) | 0.043* |
 O3 | −1.749 (−16.458 to 1.475) | 0.096 |
Sperm motility | ||
 PM2.5 | −0.303 (−7.508 to 5.608) | 0.765 |
 SO2 | 0.049 (−27.026 to 28.308) | 0.962 |
 NOx | −2.321 (−4.014 to −0.207) | 0.032* |
 O3 | −1.248 (−6.437 to 1.624) | 0.227 |
Sperm normal form | ||
 PM2.5 | 1.248 (−3.566 to 13.322) | 0.234 |
 SO2 | −0.617 (−46.216 to 25.681) | 0.548 |
 NOx | 1.400 (−1.147 to 5.369) | 0.185 |
 O3 | 0.992 (−4.546 to 12.267) | 0.339 |