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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: Drug Alcohol Depend. 2014 Apr 13;140:33–41. doi: 10.1016/j.drugalcdep.2014.03.031

Table 1A.

Demographic and clinical characteristics of participants with cannabis dependence and healthy comparison participants.

CB (n = 20) HC (n= 20 )
Mean St. Error Mean St. Error F p
Age 26.65 2.19 29.2 2.25 0.66 0.42
Shipley IQ 93.1 2.86 108.42 2.36 16.85 0.0002
n % n % χ 2 p
Gender (male) 20 100.00 20 100.00 - -
Ethnicity 1 5.00 1 5.00 0.00 1.00
Race
 African American 12 60.00 7 35.00 7.87 0.05
 Caucasian 5 25.00 13 65.00
 Hispanic* 1 5.00 0 0.00
 Biracial** 2 10.00 0 0.00
Married/Serious
Relationship 1 5.00 1 5.00 0.00 1.00
Employed *** 10 50.00 7 63.16 0.69 0.41
Tobacco user 15 80.00 2 10.00 17.29 <.0001
*

One cannabis-dependent participant reported their race as hispanic

**

Indicates half African American and half Caucasian

***

Information on employment status missing for one healthy comparison participant