. Author manuscript; available in PMC: 2019 Oct 11.

Published in final edited form as: Psychol Addict Behav. 2017 Jul 13;31(6):712–720. doi: 10.1037/adb0000299

Table 5.

Results of Multivariate Repeated Measures Model Predicting Cannabis Use by Peer Behavior

Variables	Pillai’s Trace	F	P	Eta²
Time	0.020	1.041	0.387	0.02
Time × Age	0.021	1.050	0.382	0.02
Time × Race	0.010	0.513	0.726	0.01
Time × Gender	0.033	1.732	0.144	0.03
Time × Family History of Substance Use	0.059	3.160	0.015	0.06
Time × Antisocial Behavior	0.079	4.307	0.002	0.08
Time × Peer Risk Behavior	0.041	2.147	0.076	0.04
Time × Peer Substance User	0.059	3.123	0.016	0.06
Time × Offers to Use Substances	0.044	2.307	0.059	0.04
Time × Closeness	0.213	1.634	0.021	0.05
Time × Risk Behavior × Closeness	0.206	2.755	0.001	0.05
Time × Peer Substance User × Closeness	0.283	3.093	0.001	0.07
Time × Offers to Use Substances × Closeness	0.154	2.027	0.010	0.04

Note: Eta-Squared effect sizes are interpreted as .03=small, .06=medium, .14=large (Cohen, 1988).