Table 1.
Subject Demographic Characteristics for 40 fMRI participants.
| n = 40* | |
|---|---|
| Characteristic | Mean (SD) or Number (%) |
| Age | 18.83 (0.96) |
| Gender (female) | 19 (47.5%) |
| Race | |
| White | 35 (87.5%) |
| Black | 4 (10%) |
| More than one race | 1 (2.5%) |
| Ethnicity | |
| Hispanic/Latino | 2 (5%) |
| Non-Hispanic/Latino | 38 (95%) |
| MacArthur Socioeconomic Scalea | 5.75 (1.7) |
| TLFB Days of Cannabis Use | 46.05 (15.8) |
| TLFB Days of Alcohol Use | 15.4 (9.2) |
| TLFB Drinks Per Drinking Day | 5.57 (2.22) |
| TLFB Total Cigarettes | 11.23 (40.7) |
| RAPI Total | 7.95 (7.8) |
| MCQ Total | 44.48 (12.3) |
| BIS Total | 19.44 (4.1) |
| BAS Drive | 11.7 (2.0) |
| BAS Reward | 17.76 (1.7) |
| BAS Fun | 13.17 (1.6) |
| STAI | 30.43 (8.9) |
| BDI Total | 6.25 (6.1) |
Note. TLFB = Timeline Followback (60 day version), RAPI = Rutgers Alcohol Problems Index, MCQ = PhenX Marijuana Craving Questionnaire, BIS = Behavioral Inhibition System, BAS = Behavioral Activation System, STAI = State Trait Anxiety Index, BDI = Beck Depression Inventory (version 2)
a
Second item of the MacArthur Socioeconomic Scale is reported.
*
1 participant was excluded from analyses due to excessive motion and all values in demographics table reflect n=40 subjects included in the imaging analyses.