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Table 5 Associations between all covariates and birth outcomes by multiple linear regression

From: Maternal urinary 2-hydroxynaphthalene and birth outcomes in Taiyuan, China

Variables BW BL BHC PI CI
Maternal age
 β −2.43 −0.07 0.01 0.01 0.09
 p 0.695 0.026 0.588 0.058 0.593
Maternal BMI
 β 27.52 0.04 0.07 0.02 −0.62
 p 0.001 0.293 0.005 0.006 0.002
Parity
 β −48.49 0.20 0.12 −0.07 1.80
 p 0.393 0.452 0.509 0.096 0.235
Gestational age
 β 20.84 0.06 0.07 0.01 −0.50
 P 0.001 0.001 0.001 0.001 0.001
Gender (female vs. male)
 β −67.66 0.07 −0.30 −0.06 1.13
 p 0.166 0.751 0.058 0.074 0.386
Passive smoking
 β −41.20 −0.19 −0.17 0.01 0.14
 p 0.402 0.423 0.285 0.921 0.913
2-OH NAP
 β −71.83 −0.31 −0.08 − 0.01 2.09
 p 0.053 0.071 0.506 0.831 0.035
Eating grilled meat
 β 8.69 0.19 −0.10 −0.02 −0.57
 p 0.859 0.400 0.513 0.524 0.664
Urinary phenol
 β 8.48 0.11 −0.08 −0.01 −0.41
 p 0.721 0.310 0.315 0.442 0.519
Cord blood lead
 β 77.93 −0.10 −0.07 0.09 −2.70
 p 0.240 0.750 0.759 0.071 0.127
  1. Adjusted for parity, maternal BMI, maternal age, gender of newborn, gestational age, eating grilled meat, passive smoking, and levels of the other three PAH metabolites, urinary phenol, and cord blood lead. The bold text indicates a p-value less than 0.05