Table 2.

Correlations between choice variables and concurrent drug use in the previous month among all subjects and split by treatment-seeking status.

	Correlation Difference		All Subjects		Non-Treatment Seeking Subjects		Treatment-Seeking Subjects

Choice Variable	z^a	z^b	Current Cocaine Use: Days Per Week	Total Drug^c Use Days	Current Cocaine Use: Days Per Week	Total Drug^c Use Days	Current Cocaine Use: Days Per Week	Total Drug^c Use Days
Cocaine>Pleasant Explicit	1.9	2.2^*	.27	.31^*	.40^*	.45^*	−.06	−.08
Cocaine>Neutral Explicit	2.0^*	2.5^*	.34^*	.38^*	.47^*	.53^**	.00	−.07
Cocaine>Unpleasant Explicit	2.2^*	2.7^*	.39^*	.44^**	.47^*	.51^*	−.07	−.14
Cocaine>Average Explicit	2.2^*	2.7^*	.36^*	.41^*	.48^*	.53^**	−.04	−.10
Cocaine>Pleasant Probabilistic	3.3^*	3.4^*	.32^*	.38^*	.53^**	.56^**	−.24	−.22
Cocaine>Neutral Probabilistic	3.1^*	3.4^*	.17	.22	.42^*	.45^*	−.33	−.36
Cocaine>Unpleasant Probabilistic	2.9^*	3.4^*	.28	.39^*	.38	.41^*	−.33	−.40
Cocaine>Average Probabilistic	3.4^*	3.6^*	.28	.35^*	.48^*	.51^**	−.33	−.35

Note.

Correlation difference between treatment-seekers and non-treatment-seekers on ‘Current ocaine Use: Days Per Week’;

correlation difference between treatment-seekers and nontreatment-seekers on ‘Total Drug Use Days: Last 30 Days’;

includes cocaine, marijuana, and alcohol;

p<0.01 (or p<0.05 for z values indicating correlation differences between the groups),

^**

p<0.001.