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Table 6 Multiple stepwise regression analyses for determinants of PUFA levels in cord blood erythrocytes

From: Determinants of polyunsaturated fatty acid concentrations in erythrocytes of pregnant Japanese women from a birth cohort study: study protocol and baseline findings of an adjunct study of the Japan environment & Children’s study

 

DHA (n = 1379)

log-EPA (n = 1247)

ARA (n = 1365)

Adjusted model R2

0.165

0.348

0.171

Variables

B

Standardized β

p

B

Standardized β

p

B

Standardized β

p

PUFA level in maternal blood

0.31

0.34

<.0001

0.32

0.54

<.0001

0.39

0.31

<.0001

Household income

  < 2 (million Japanese Yen)

-

  

reference

 

-

  

 2 to <4

-

  

−0.022

−0.058

0.017

-

  

 4 to <6

-

  

0.008

0.019

0.45

-

  

 6 to <8

-

  

0.016

0.031

0.23

-

  

  ≥ 8

-

  

−0.013

−0.022

0.40

-

  

Smoking habits

 Never smoked

-

  

reference

 

-

  

 Ex-smokers before pregnancy

-

  

0.006

0.020

0.56

-

  

 Ex-smokers after pregnancy

-

  

−0.014

−0.046

0.19

-

  

Smokers

-

  

−0.003

−0.007

0.86

-

  

Body weight gain

0.016

0.064

0.011

-

  

-

  

Fish intake

-

  

0.036

0.065

0.0061

−0.26

−0.079

0.0016

Breakfast skipper (Yes)

-

  

-

  

0.13

0.065

0.0088

Gestational age

0.020

0.18

<.0001

-

  

−0.024

−0.15

<.0001

Sex (male)

0.098

0.096

0.0001

-

  

−0.26

−0.18

<.0001

Season at birth

 Spring

-

  

reference

 

-

  

 Summer

-

  

−0.032

−0.095

0.0008

-

  

 Autumn

-

  

0.073

0.22

<.0001

-

  

 Winter

-

  

−0.023

−0.068

0.017

-

  
  1. Variables included in the model are indicated
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Environmental Health and Preventive Medicine

ISSN: 1347-4715

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