Table 2.
Demographic Data by Immigration Status for the DA Synthesis Study, UK Site
| Demographics | Nonimmigrant, n = 44 | Immigrant, n = 32 |
|---|---|---|
| Age, years; mean (SD) | 24.61 (4.54) | 23.25 (4.14) |
| Ethnicity 1/2/3/4/5 | 35/2/0/7/0 | 9/2/5/16/0 |
| Clinical status | ||
| HV | 13 | 13 |
| CHR | 31 | 19 |
| Gender | ||
| Male | 29 | 15 |
| Female | 15 | 17 |
| Tobacco smoking status | ||
| Nonsmoker | 24 | 20 |
| Smoker | 19 | 13 |
| Cannabis | ||
| 0/1/2/3/4 | 12/14/5/6/7 | 10/11/4/4/3 |
| Cocaine | ||
| 0/1/2/3/4 | 26/12/3/2/1 | 23/5/1/2/1 |
| Amphetamine | ||
| 0/1/2/3/4 | 30/12/1/1/0 | 28/3/0/1/0 |
| Ecstasy | ||
| 0/1/2/3/4 | 21/18/3/2/0 | 24/4/3/1/0 |
| Injected dose (MBq) | 166.41 (16.20) | 163.97 (18.21) |
| Specific activity (MBq/μM) | 26.09 (13.94) | 28.28 (16.70) |
Note: SD, standard deviation; HV, healthy volunteer; CHR, clinical high risk; SCZ, schizophrenia; Ethnicity (self-reported): 1L White; 2L Mixed/multiple ethnic groups; 3: Asian/Asian Canadian; 4: Black/African/Caribbean/Black Canadian; 5: Other. Drug use is denoted 0: never used; 1: very occasional or experimental use; 2: occasional (monthly) use; 3: moderate (weekly) use; 4: severe (daily) use. There are no significant group differences.