Table 1:

Participant demographics, driving experience, and cannabis history by usage group.

	No-use (n = 30)	Occasional use (n = 24)	Daily use (n = 31)
Male (%)	12 (40%)	14 (58.3%)	17 (54.8%)
Mean age, years (sd)	32.7 (4.94)	31.5 (4.91)	33.3 (5.42)
Non-Hispanic white (%)	25 (83.3%)	21 (87.5%)	25 (80.6%)
College degree or higher (%)	26 (86.7%)	20 (83.3%)	16 (51.6%)
Employed (%)	28 (93.3%)	24 (100%)	26 (83.4%)
Mean driving experience, years (sd)	15.3 (5.7)	13.5 (5.6)	15.9 (5.2)
Mean days used in the past 30 days (sd)	-	5.7 (2.6)	29.7 (1.3)
Mean post-use whole blood THC concentration (ng/mL)	-	6.4 (5.6)	36.4 (37.3)