Table 1.

Baseline marijuana use levels.

Variable	Placebo	l-DOPA
	Mean, SD (N)	Mean, SD (N)
HISTORICAL DATA
Baseline marijuana use (days in past 30)	3.41, 7.68 (29)	1.97, 5.67 (35)
Baseline marijuana use (years of use)	9.17, 10.06 (29)	11.03, 9.96 (34)
CURRENT DATA
Baseline marijuana use (days in past 30)	3.28, 7.23 (58)	3.24, 6.94 (55)
Baseline marijuana use (years of use)	13.43, 10.71 (58)	10.55, 9.21 (55)