Table 6 The effect of SHS exposure on trace element concentrations by multiple linear regressions.

From: Relationships of the serum levels of toxic trace elements in pregnant women versus exposure to second-hand smoke

Model

Metal (Response)

B

SE

p-value

1

Se (µg/l)

-0.100

0.162

0.539

2

Zn (µg/l)

-0.254

0.195

0.196

3

Cu (µg/l)

0.042

0.151

0.779

4

Fe (mcg/dL)

-0.093

0.306

0.762

5

As (µg/l)

0.021

0.083

0.799

6

Cd (µg/l)

0.168

0.226

0.458

7

Cr (µg/l)

0.121

0.078

0.123

8

Hg (µg/l)

0.249

0.222

0.265

9

Ni (µg/l)

0.105

0.077

0.174

10

Pb (µg/l)

0.347

0.346

0.318

  1. B: the coefficient of SHS exposure adjusted for other variables.
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