Table 2.

Significant associations of smoking variables with gray matter volume.

	Cigarettes per day			Duration			Ever smoked
Region	β	p	q	β	p	q	β	p	q
Total gray matter volume	−0.021	0.023	0.068	−0.012	0.004	0.012	−0.094	0.00003	4.50E−05
VIIIa cerebellum (R)	0.009	0.320	0.772	0.002	0.631	0.911	−0.089	0.0001	0.010

Standardized beta coefficients (β) and p values are reported for hurdle negative-binomial regression models of smoking variables predicting gray matter volume. Bold indicates FDR significance (q < 0.05). Full results are reported in Table S2.