TABLE 5.

Estimated relative reinforcing efficacy indices for populations stratified by age, gender, and race

Covariate values	Intensity (MC SE)	Omax (MC SE)	Pmax (MC SE)	α (MC SE)
Age ≤ 25, Gender = Male, Race = White	17.62 (1.85)	4.01 (0.71)	0.46 (0.07)	0.55 (0.07)
Age ≤ 25, Gender = Male, Race = Non-white	13.76 (1.47)	3.33 (0.64)	0.48 (0.08)	0.52 (0.07)
Age ≤ 25, Gender = Female, Race = White	16.69 (1.75)	3.59 (0.61)	0.43 (0.06)	0.58 (0.07)
Age ≤ 25, Gender = Female, Race = Non-white	13.04 (1.38)	2.97 (0.55)	0.46 (0.07)	0.55 (0.07)
Age > 25, Gender = Male, Race = White	21.06 (2.16)	5.59 (1.27)	0.53 (0.11)	0.47 (0.07)
Age > 25, Gender = Male, Race = Non-white	16.45 (1.70)	4.69 (1.28)	0.57 (0.15)	0.44 (0.07)
Age > 25, Gender = Female, Race = White	19.95 (2.07)	4.96 (1.00)	0.50 (0.09)	0.50 (0.07)
Age > 25, Gender = Female, Race = Non-white	15.58 (1.62)	4.14 (0.94)	0.53 (0.11)	0.47 (0.08)

Note. MC SE: Monte Carlo standard error; α: measure of reinforcing strength.