. 2013 Nov 6;4:138. doi: 10.3389/fpsyt.2013.00138

Table 1.

Various populations’ shares of cannabis-related activity by five different measures of participation, 2011 NSDUH.

	Past-year users (%)	Past-month users (%)	Past-month days of use (%)	Past-month purchasers (%)	Past-month purchases (%)
Risk factors
Males	60^a	64	69^a	70^a	72^a
Used an illegal drug other than cannabis in
Past-year	35^a	40	47^a	46^a	51^a
Past-month	15^a	20	24^a	24^a	29^a
Past-month use of
Cocaine	4	5	7^a	6	7^a
Cigarettes	53^a	59	66^a	67^a	76^a
Alcohol	77^a	80	79	81	81
Blunts	27^a	42	54^a	57^a	73
Met criteria in past-year for
Cannabis dependence	9^a	12	18^a	19^a	27^a
Cannabis abuse or dependence	14^a	19	26^a	26^a	37^a
Abuse of dependence, any substance	33^a	37	42^a	43^a	52^a
Bought cannabis used last time	45^a	56	70^a	85^a	88^a
Ever arrested and booked	36^a	40	47^a	47^a	53^a
Drove under influence of drugs (past-year)	29^a	37	47^a	46^a	47^a
Adult with less than high school education	14	16	19	19	24^a
Protective factors
College graduate	19	17	13^a	11^a	5^a
Married	22	21	21	19	13^a
Family income > $75,000	25	23	20	20	15^a

^aIndicates that proportion is statistically significantly different from proportion of past-month users (p < 0.05).