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Table 1 Regression analysis for indicators of environmental risk predicting hyperactive-impulsive 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

-

2.28

0.42

-

5.39

<0.001

Smoking in pregnancy

0.02

0.31

0.16

0.11

1.96

0.05

Social class

0.02

0.22

0.10

0.12

2.19

0.03

Birth weight

<0.001

-0.00003

0.0001

-0.05

-0.85

0.40

CD symptoms

0.03

0.14

0.06

0.14

2.51

0.01

Age at assessment

0.01

-0.007

0.003

-0.12

-2.19

0.03

Verbal IQ

0.02

-0.003

0.002

-0.09

-1.71

0.04

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BMC Psychiatry

ISSN: 1471-244X

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