Table 4.

Correlations between volumes of the amygdala and hippocampus and cocaine use before and during treatment.

Cocaine Use Indicators		Amygdala		Hippocampus
		L	R	L	R
	Mean (SD)	Correlations (r)
Cocaine Use Days Before Treatment	14.6 (7.2)	.419	−.07	.60**	.71**
Longest Abstinence During Treatment	43.8 (27.4)	−.22	.05	−.39	−.57*
% Negative Urines During Treatment	47.6 (41.4)	.05	.25	−.55*	−.63**

Cocaine Use Indicator Descriptions: Cocaine Use Days Before Treatment: number of days of cocaine use within 28 days immediately before treatment onset; Longest Abstinence During Treatment: maximum number of days of contiguous abstinence from cocaine during treatment; %Negative Urines During Treatment: percent of cocaine-negative urine samples during treatment. L= left, R=right. Correlations between cocaine use indicators and amygdalar and hippocampal volumes are presented as Pearson’s correlation coefficients (r) with significance levels indicated by

^*p< .05 and

^**p < .01 before correction for multiple analyses.