Table 4.

Cross-twin correlations for MDD and AUD at T1 and T2 in five zygosity groups.

	T1 MDD	T1 AUD	T2 MDD	T2 AUD
MZ	.30 [.18, .40]	.47 [.35, .57]	.33 [.29, .46]	.51 [.34, .66]
DZ	.12 [.01, .23]	.28 [.16, .40]	.09 [−.07, .25]	.35 [.14, .54]
MZ male	.39 [.19, .59]	.48 [.32, .64]	.26 [−.03, .55]	.50 [.25, .75]
DZ male	.01 [−.33, .36]	.14 [−.13, .41]	−.27 [−.79, .25]	.54 [.23, .85]
MZ female	.27 [.14, .40]	.44 [.30, .58]	.35 [.21, .50]	.51 [.30, .72]
DZ female	.38 [.23, .54]	.42 [.21, .64]	.26 [.04, .48]	.46 [.04, .87]
DZ opposite	−.11 [−.28, .05]	.27 [.10, .44]	−.03 [−.27, .21]	.20 [−.11, .50]

Note: MZ and DZ correlations are adjusted for different prevalences among men and women.