Table 2.
Demographic and Clinical Characteristics of Study Participants (mean/n±SD)
| CB+ | CB− | Between-group statistics | |
|---|---|---|---|
| Cohort characteristics | n=24 | n=26 | t(48)/χ2(1), p-value |
| Mini-Mental State Examination score | 28.0±1.6 | 28.4±1.7 | 0.82, 0.42 |
| Age, years | 65.4±7.2 | 67.7±7.1 | 1.12, 0.27 |
| Educational achievement, years | 15.3±2.0 | 16.6±2.3 | 2.04, 0.05** |
| Female sex, n (%) | 8 (33) | 12 (46) | 1.92, 0.17 |
| Cigarette smoker, n (%) | 14 (58) | 7 (27) | 5.05, 0.02** |
| Hamilton Depression Scale score | 7.0±7.5 | 4.9±5.3 | 1.16, 0.25 |
| WTAR | 35.7±9.6 | 41.2±7.4 | 2.24, 0.03** |
| Hollingshead coding | 5.4±1.7 | 5.8±1.7 | 0.92, 0.36 |
| Cannabis use | — | — | |
| Onset of regular use (age in years±SD) | 17.7±4.2 | — | — |
| Duration of use (years±SD) | 11.3±13.0 | — | — |
| Lifetime use (days±SD) | 4181.2±4784.6 | — | — |
| Length of abstinence (years±SD) | 29.9±6.0 | — | — |
| Lifetime alcohol use (no. of standard drinks/month±SD) | 21.6±12.0 | 19.8±11.3 | −0.54, 0.59 |
**
p<0.05.
SD, standard deviation; WTAR, Wechsler Test of Adult Reading.