Table 5.

Mediation model: Marginal effects from probit models of ever regular smoking, controlling for respondent’s verbal cognition score

	Add Health (1974–1983)
	Cognition control
	No	Yes
PGS for education	−0.076***	−0.068***
	(0.007)	(0.001)
Verbal cognition score	—	−0.003***
	—	(0.001)
% Mediated	10.708%
N	4,163

^***p<0.001,

^**p<0.01,

^*p<0.05; Robust standard errors in parentheses; PGS: Polygenic score

Models control for genetic sex, year of birth, and their interaction. All variables are held at their means to estimate marginal effects.