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
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
Birth weight
<0.001
0.0003
0.0001
-0.08
-1.37
0.71