Table 2.

Maximum likelihood correlations (95% Confidence Intervals) for childhood ADHD symptoms and BMI during adolescence, young adulthood, and adulthood by Zygosity.

Zygosity	ADHD Symptoms	Adolescent BMI	Young Adult BMI	Adult BMI
Male-Male
MZM	0.42 (0.24 – 0.54)	0.86 (0.80 – 0.91)	0.80 (0.71 – 0.86)	0.82 (0.76 – 0.88)
DZM	0.32 (0.10 – 0.50)	0.33 (0.10 – 0.53)	0.33 (0.10 – 0.53)	0.43 (0.09 – 0.62)
FSM	0.24 (0.06 – 0.39)	0.43 (0.28 – 0.55)	0.42 (0.28 – 0.55)	0.29 (0.15 – 0.42)
Female-Female
MZF	0.31 (0.11 – 0.48)	0.82 (0.73 – 0.88)	0.82 (0.73 – 0.88)	0.89 (0.85 – 0.92)
DZF	0.12 (−0.14 – 0.35)	0.21 (−0.04 – 0.44)	0.21 (−0.04 – 0.44)	0.50 (0.33 – 0.63)
FSF	0.13 (−0.02 – 0.27)	0.45 (0.33 – 0.56)	0.45 (0.33 – 0.56)	0.44 (0.32 – 0.54)
Opposite Sibling (Male-Female)
OSDZ	−0.04 (−0.22 −0.26)	0.24 (0.05 – 0.42)	0.24 (0.05 – 0.42)	0.28 (0 08 – 0.44)
OSFS	−0.07 (−0.19 – 0.06)	0.37 (0.26 – 0.48)	0.37 (0.36 – 0.48)	0.29 (0.17 – 0.40)