Table 1.
Baseline Sample Characteristics and Differences Across High and Low Frequency IVR Responders
| TOTAL | HIGH FREQUENCY RESPONDERS (n=35) | LOW FREQUENCY RESPONDERS (n=62) | |||
|---|---|---|---|---|---|
| M/n | SD/% | M/n | SD/% | p | |
| Age (M, SD) | 21.32 | 1.90 | 21.79 (1.90) | 21.05 (1.85) | .067 |
| Sex | |||||
| Female | 41 | 42.3% | 13 (31.7%) | 28 (68.3%) | .470 |
| Male | 54 | 55.7% | 21 (38.9%) | 33 (61.1%) | |
| Race/Ethnicity | |||||
| Non Hispanic Black | 20 | 20.6% | 6 (30.0%) | 14 (70.0%) | .827 |
| Non Hispanic White | 48 | 49.5% | 17 (35.4%) | 31 (64.6%) | |
| Non Hispanic Other | 19 | 19.6% | 8 (42.1%) | 11 (57.9%) | |
| Hispanic | 9 | 9.3% | 4 (44.4%) | 5 (55.6%) | |
| Employment Status | |||||
| Employed (full or part time) | 50 | 51.5% | 16 (32.0%) | 34 (68.0%) | .501 |
| Unemployed/Disabled | 18 | 18.6% | 6 (33.3%) | 12 (66.7%) | |
| Student | 29 | 29.9% | 13 (44.8%) | 16 (55.2%) | |
| Cannabis use | M | SD | M (SD) | M (SD) | |
| Days cannabis used in past 30 days | 24.67 | 7.98 | 24.03 (8.48) | 25.03 (7.74) | .555 |
| Perceived cannabis intoxication in past 30 days | 6.55 | 1.55 | 6.66 (1.19) | 6.48 (1.73) | .599 |
| Motivation to quit cannabis | 4.37 | 2.34 | 3.75 (2.34) | 4.70 (2.31) | .263 |
| n | % | n (%) | n (%) | ||
| Cannabis dependence (CUDIT-R ≥ 12) | 60 | 61.9% | 19 (31.7%) | 41 (68.3%) | .249 |
| Tobacco product use | M | SD | M (SD) | M (SD) | |
| Number tobacco products used in past 30 days | 2.27 | 1.11 | 2.26 (1.40) | 2.27 (0.93) | .943 |
| Number days smoked cigarette in past 30 days | 16.65 | 12.43 | 15.39 (12.41) | 17.38 (12.53) | .546 |
| Cigarettes per day | 5.49 | 6.14 | 5.91 (7.04) | 5.24 (5.63) | .691 |
| Motivation to quit nicotine/tobacco | 5.80 | 2.56 | 5.86 (2.50) | 5.77 (2.61) | .875 |
| Nicotine dependence | n | % | n (%) | n (%) | |
| Tobacco use within 5 minutes of waking | 15 | 15.5% | 3 (20.0%) | 12 (80.0%) | .373 |
| Tobacco use within 6-30 minutes of waking | 24 | 24.7% | 7 (29.2%) | 17 (70.8%) | |
| Tobacco use within 31-60 minutes of waking | 15 | 15.5% | 6 (40.0%) | 9 (60.0%) | |
| Tobacco use after 60 minutes of waking | 42 | 43.3% | 18 (42.9%) | 24 (57.1%) | |
| Alcohol use | M | SD | M (SD) | M (SD) | |
| Drinks per drinking episode in past 30 days | 3.01 | 2.35 | 2.77 (2.37) | 3.15 (2.35) | .455 |
| Number days used alcohol in past 30 days | 6.27 | 6.64 | 7.54 (8.14) | 5.55 (5.57) | .157 |
| n | % | n (%) | n (%) | ||
| Binge drinking in past 30 days | 24 | 24.7% | 7 (29.2%) | 17 (70.8%) | .434 |
| Mental health | |||||
| Anxiety (GAD-7 ≥ 8) | 36 | 37.1% | 12 (33.3 %) | 24 (66.7%) | .665 |
| Depression (CESD-R ≥ 10) | 45 | 46.4% | 15 (33.3%) | 30 (66.7%) | .600 |
| Personality characteristics | M | SD | M (SD) | M (SD) | |
| Sensation-seeking (BSSS-4) | 14.96 | 3.20 | 15.09 (3.48) | 14.89 (3.06) | .771 |
| Impulsivity (BIS-8) | 15.92 | 4.33 | 15.97 (4.67) | 15.89 (4.17) | .927 |
Note. GAD-7, seven-item Generalized Anxiety Disorder Scale; CESD-R, Center for Epidemiologic Studies Depression Scale-Revised (CESD-R); BSSS-4, four-item Brief Sensation-Seeking Scale; BIS, eight-item Barratt Impulsivity Scale
*** p < .001. ** p < .01. * p < .05