. Author manuscript; available in PMC: 2007 Mar 14.

Published in final edited form as: Neurotoxicol Teratol. 2006 Dec 12;29(1):141–152. doi: 10.1016/j.ntt.2006.10.010

Table 2.

Bivariate Relationships Between Hippocampal Volumes and California Verbal Learning Test Performance by Group

	LH/ICV	RH/ICV	Hippocampal Asymmetry Ratio
Controls
CVLT 1^st Trial	−.13	.22	.42 ^±
CVLT Total Recall	−.29	−.02	.33
ALC Users
CVLT 1^st Trial	−.09	−.24	−.20
CVLT Total Recall	−.01	.18	.23
MJ+ALC Users
CVLT 1^st Trial	−.10	−.10	.004
CVLT Total Recall	.01	−.09	−.16
	Fisher’s z-score
	LH/ICV	RH/ICV	Hippocampal Asymmetry Ratio
Controls vs. ALC (1^st Trial)	−0.11	1.29	1.75^*
Controls vs. ALC (Total Recall)	−0.79	−0.55	0.30
Controls vs. MJ+ALC (1^st Trial)	−0.10	1.03	1.37^**
Controls vs. MJ+ALC (Total Recall)	−0.98	0.22	1.60^*
ALC vs. MJ+ALC (1^st Trial)	0.55	−0.42	−0.60
ALC vs. MJ+ALC (Total Recall)	−0.06	0.78	1.14

^±

p<.06

p<.10,

^**

p<.05.

Notes: Pearson product moment correlations run separately by group: controls (n=21), alcohol users (n=16), marijuana+alcohol users (n=26). Fisher’s converted z-score measures the differences between correlation coefficients. LH= Left hippocampal volume. RH= Right hippocampal volume. ICV= Intracranial volume. Hippocampal asymmetry was calculated as RH-LH/RH+LH; positive values denote R>L and negative values reflect L>R. CVLT= California Verbal Learning Test (Children’s Version or 2^nd Edition) standard score.