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Table 3 Multiple regression analysis for indicators of environmental risk predicting Conduct Disorder 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

Constant

-

0.55

0.33

-

1.70

0.09

Smoking in pregnancy

0.04

0.21

0.06

0.18

3.34

0.001

Social class

0.02

0.07

0.04

0.09

1.72

0.09

Birth weight

0.007

-0.0004

0.001

-0.10

-1.89

0.06

Gender

0.02

-0.28

0.10

-0.15

-2.84

0.005

Verbal IQ

0.02

-0.004

0.003

-0.09

-1.68

0.09

ADHD symptoms

0.01

0.02

0.01

0.10

1.85

0.07