Table 1. The association of BMI with global measures of cortical grey matter structure.

Dependent variable	Covariate	t-value	P-value
Cortical thickness	Age, gender, scanner, hemisphere and surface area	−1.18	0.24
Surface area	Age, gender, scanner and hemisphere	0.07	0.95
LGI	Age, gender, scanner, hemisphere and surface area	−0.19	0.85

Abbreviations: BMI, body mass index; LGI, local gyrification index.