Table 2:

Comparison of behavioral economic indices of demand intensity (Q0) and elasticity (α) for cocaine, MDPV, αPVP, MCAT, MDMA, and methylone. T-test comparing the peak and peak + 1/2 log demand curves.

Drug	α	Q0	r2	T Test
Cocaine:
Peak	1.2 × 10−5	68	0.98
+ ½-log	1.7 × 10−5	25	0.97	T3=1.0, p=0.38
Grouped	1.3 × 10−5	40	0.97
MDPV:
Peak	3.0 × 10−5	52	0.98
+ ½-log	1.7 × 10−5	18	0.93	T3=2.4, p=0.093
Grouped	1.8 × 10−5	25	0.94
αPVP:
Peak	3.6 × 10−5	57	0.99
+ ½-log	6.1 × 10−5	47	0.96	T3=1.5, p=0.11
Grouped	4.2 × 10−5	52	0.98
MCAT
Peak	1.9 × 10−5	75	0.91
+ ½-log	2.5 × 10−5	21	0.82	T3=1.4, p=0.12
Grouped	1.7 × 10−5	80	0.89
MDMA
Peak	4.7 × 10−5	20	0.86
+ ½-log	4.9 × 10−5	16	0.93	T3=0.10, p=0.46
Grouped	4.3 × 10−5	23	1.0
Methylone
Peak	3.5 × 10−5	57	0.99
+ ½-log	1.9 × 10−5	18	0.83	T3=0.76, p=0.50
Grouped	1.8 × 10−5	23	0.88