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
< 0.001
0.06
0.18
-0.02
-0.36
0.72
Social class
0.001
0.07
0.12
0.03
0.58
0.56
Birth weight
<0.001
0.00001
0.0001
-0.006
-0.11
0.91