Table 5. Significance level (p values) of model comparison Wald tests.

	Model 3 (full model) compared to Model 1 (intelligence only)	Model 3 (full model) compared to Model 2 (intelligence not included)
Alcohol use	.0027	.0009
Smoking	< .0001	.1168
Overweight	.0004	.0003
Fruit and vegetable consumption	.0047	< .0001
Physical activity	.2294	.7209

Results of Wald tests comparing Model 3 (full model including intelligence, executive function, and impulsivity) with Model 1 (intelligence only) and Model 2 (executive function and impulsivity only) for each outcome variable. Bold values indicate that Model 3 was a significant improvement.