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Table 1 Characteristics of the 275 study participants

From: Maternal blood cadmium, lead and arsenic levels, nutrient combinations, and offspring birthweight

Category N Cadmium (μg/dL) quantile: median [IQR*] Lead (μg/dL) quantile: median [IQR*] Arsenic (μg/dL) quantile: median [IQR*]
Maternal age at delivery ≤30 178 0.025 [0.012, 0.06] 0.345 [0.153, 0.811] 0.043 [0.038, 0.051]
(30, 35] 66 0.02 [0.01, 0.039] 0.299 [0.152, 0.726] 0.044 [0.039, 0.051]
>35 31 0.023 [0.009, 0.033] 0.517 [0.225, 1.407] 0.044 [0.04, 0.048]
Pre pregnancy BMI ≤30 201 0.023 [0.011, 0.053] 0.358 [0.161, 0.83] 0.044 [0.039, 0.052]
>30 74 0.025 [0.01, 0.042] 0.321 [0.153, 0.844] 0.044 [0.037, 0.049]
Education College graduate 89 0.014 [0.009, 0.028] 0.275 [0.12, 0.718] 0.043 [0.038, 0.05]
High school graduate/GED 97 0.029 [0.015, 0.061] 0.268 [0.17, 0.663] 0.043 [0.038, 0.051]
<high school 89 0.026 [0.012, 0.098] 0.535 [0.235, 1.113] 0.045 [0.041, 0.053]
Smoking status Non-smoker 235 0.019 [0.01, 0.035] 0.341 [0.15, 0.779] 0.044 [0.038, 0.051]
Smoker 40 0.051 [0.035, 0.1] 0.404 [0.177, 1.304] 0.045 [0.04, 0.056]
Race/Ethnicity Black 104 0.031 [0.015, 0.059] 0.339 [0.162, 0.761] 0.043 [0.037, 0.051]
Hispanic 89 0.02 [0.01, 0.09] 0.517 [0.227, 1.105] 0.044 [0.041, 0.051]
White 82 0.016 [0.009, 0.029] 0.242 [0.126, 0.716] 0.045 [0.038, 0.051]
Infant sex Male 132 0.019 [0.01, 0.041] 0.367 [0.145, 0.864] 0.044 [0.039, 0.051]
Female 143 0.026 [0.012, 0.053] 0.337 [0.178, 0.809] 0.044 [0.038, 0.051]
Gestational age at delivery <37 25 0.023 [0.009, 0.035] 0.451 [0.151, 0.954] 0.047 [0.043, 0.05]
> = 37 250 0.024 [0.012, 0.047] 0.341 [0.158, 0.817] 0.043 [0.038, 0.051]
  1. *IQR: interquartile range