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Table 4 Linear Regression analysis for indicators of environmental risk predicting Oppositional defiant symptoms:

From: Effects of low birth weight, maternal smoking in pregnancy and social class on the phenotypic manifestation of Attention Deficit Hyperactivity Disorder and associated antisocial behaviour: investigation in a clinical sample

 

R2

Unstandardised

Standardised

  
  

Beta

Standard error

Beta

t

p-value

Smoking in pregnancy

0.01

0.58

0.26

0.12

2.20

0.03

Social class

0.004

0.19

0.17

0.06

1.14

0.26

Birth weight

<0.001

0.0003

0.0001

-0.08

-1.37

0.71