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Table 7 Araki’s b values derived for AsIMM, I, Pb and Cd on specific demographic sub-groups of the present study group (training dataset)

From: Assessing urinary flow rate, creatinine, osmolality and other hydration adjustment methods for urinary biomonitoring using NHANES arsenic, iodine, lead and cadmium data

Demographic group

n

Optimum Araki’s b value

Criterion A

Criterion A

Criterion A

Criterion A

Criterion B

Criterion B

AsIMM

I

Pb

Cd

Pb

Cd

Non-Hispanic white male

416

0.28***

0.50***

0.42***

0.31***

0.68

0.96

Non-Hispanic white female

425

0.33***

0.58***

0.50***

0.46***

0.54

0.63

Non-Hispanic black male

265

0.27***

0.51***

0.46***

0.29***

0.56

0.53

Non-Hispanic black female

224

0.24***

0.32***

0.24***

0.34***

0.44

0.53

Mexican American male

206

0.11*

0.30***

0.10

0.02

0.26

0.18

Mexican American female

187

0.34***

0.40***

0.46***

0.37***

0.58

0.56

6–11 years old

148

0.14*

0.28***

0.38***

0.08

0.10

1.38

12–19 years old

268

0.22***

0.34***

0.23***

0.21***

0.38

0.24

20–39 years old

544

0.27***

0.41***

0.39***

0.46***

0.58

0.82

40–59 years old

461

0.36***

0.48***

0.46***

0.58***

0.50

0.61

>60 years old

302

0.33***

0.55***

0.60***

0.66***

0.70

0.79

  1. In the case of Criterion A, *** and * denote the significance of the relevant UFR-analyte regression slopes to p < 0.001 and 0.05, respectively
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Environmental Health

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