. Author manuscript; available in PMC: 2012 Jul 1.

Published in final edited form as: Behav Genet. 2010 Oct 2;41(4):476–487. doi: 10.1007/s10519-010-9400-y

Table 5.

Unstandardized parameter estimates and p-values for MZ intrapair differences regressions

Age	Dependent variable	Independent variable	Boys		Girls
Age	Dependent variable	Independent variable	B	p-value	B	p-value
Age 12	Alcohol use	Depressive Sx	−0.0143	0.8129	0.0184	0.7521
Age 12	Depressive Sx	Alcohol use	−0.4148	0.8273	0.7074	0.7469
Age 14	Alcohol use	Depressive Sx	0.0513	0.2500	0.1339	0.0183
Age 14	Depressive Sx	Alcohol use	0.9550	0.2497	2.1808	0.0052
Age 17.5	Alcohol use	Depressive Sx	0.0305	0.4255	0.0771	0.0075
Age 17.5	Depressive Sx	Alcohol use	0.1951	0.5131	0.8229	0.0137