Table 1.

Genomic and exposomic variance components for youth internalizing and externalizing symptoms

Model	G only	G and E	G, E, and G × E	G, E, G × E, and E × E
INT
${\sigma }_{\mathrm{G}}^2$	0.058 (−0.092, 0.208)	0.06 (−0.069, 0.19)	0.063 (−0.067, 0.191)	0.063 (−0.066, 0.192)
${\sigma }_{\mathrm{E}}^2$		0.161 (0.116, 0.206) a	0.161 (0.115, 0.205) a	0.161 (0.115, 0.205) a
${\sigma }_{\mathrm{G}\times \mathrm{E}}^2$			0.129 (0.042, 0.215) a	0.126 (0.037, 0.215) a
${\sigma }_{\mathrm{E}\times \mathrm{E}}^2$				−0.002 (−0.024, 0.019)
LKH	−2,160.3820	−1,914.1290, p = 4.06e‐109 b	−1,909.7914, p = .0032 b	−1,909.7730, p = .848
EXT
${\sigma }_{\mathrm{G}}^2$	0.192 (0.036, 0.347) a	0.084 (−0.036, 0.203)	0.074 (−0.042, 0.189)	0.072 (−0.044, 0.187)
${\sigma }_{\mathrm{E}}^2$		0.233 (0.171, 0.294) a	0.226 (0.165, 0.286) a	0.226 (0.165, 0.286) a
${\sigma }_{\mathrm{G}\times \mathrm{E}}^2$			0.327 (0.239, 0.414) a	0.334 (0.242, 0.424) a
${\sigma }_{\mathrm{E}\times \mathrm{E}}^2$				0.005 (−0.014, 0.024)
LKH	−2,157.5381	−1,745.7653, p = 4.10e‐181 b	−1,715.3967, p = 6.52e‐15 b	−1,715.2634, p = .606

σ ² = variance components reflect proportions of total variance estimated by the model; residual (e) components not shown.

^a Nonzero overlapping 95% confidence interval.

^b Significant model likelihood ratio test compared to previous nested model.