Table 4.
Genetic and Environmental Correlations (95% Confidence Intervals) for ADHD Symptoms and BMI During Adolescence, Young Adulthood, and Adulthood for Males and Females
| ADHD Symptoms | Adolescent BMI | Young Adult BMI | Adult BMI | |
|---|---|---|---|---|
| MALES | ||||
| ADHD symptoms | -- | -- | -- | |
| BMI – Adolescence | 0.19 (0.06 – 0.32) | 0.87 (0.82 – 0.90) | 0.81 (0.74 – 0.87) | |
| BMI – Young Adulthood | 0.16 (0.03 – 0.29) | 0.40 (0.23 – 0.55) | 0.95 (0.91 – 0.99) | |
| BMI – Adulthood | 0.19 (0.07 – 0.30) | 0.23 (0.02 – 0.43) | 0.30 (0.13 – 0.47) | |
| FEMALES | ||||
| ADHD Symptoms | 0.20 (0.07 – 0.36) | 0.24 (0.10 – 0.41) | 0.24 (0.11 – 0.41) | |
| BMI – Adolescence | -- | 0.96 (0.93 – 0.99) | 0.88 (0.83 – 0.92) | |
| BMI – Young Adulthood | -- | 0.39 (0.26 – 0.51) | 0.91 (0.88 – 0.95) | |
| BMI – Adulthood | -- | 0.18 (−0.02 – 0.38) | 0.38 (0.21 – 0.54) | |
Note: Shown are genetic correlations in the upper shaded cells, and unique environmental correlations in the lower unshaded cells for both males and females. No genetic correlation between ADHD and BMI was found within males; as such, it was removed (e.g. set to 0) in the final model (demarcated by --). No unique environmental influences between ADHD and BMI were found within females; a such, it was removed (e.g. set to 0) in the final model (demarcated by --).