Table 1.

Demographics of participants

	CD (n=55)	HC (n=55)	P Value
Age (years)	40.3± 7.3	39.1 ± 10.4	0.460a
Gender (M/F)	42/13	35/20	0.145b
Amount of average monthly cocaine use (Dambacher et al.) in the prior year	17.7± 29.3	N/A	N/A
Amount per use in grams	1.0 ± 1.2	N/A	N/A
Days of cocaine use in the prior month	13.8± 8.5	N/A	N/A
Years of cocaine use	17.3± 8.4	N/A	N/A

Note: values are mean ± S.D.

^atwo-sample t test.

^bx² test