Table 2.
Participants’ Characteristics
| n (%) | |
|---|---|
| Sociodemographic characteristics at baseline | |
| Gender | |
| Male | 26 (65) |
| Female | 14 (35) |
| Age: mean (SD) | 48.3 (12.1) |
| Age range | |
| 18–24 | 1 (2.5) |
| 25–44 | 13 (32.5) |
| 45–65 | 26 (65) |
| Education: n (%) | |
| Middle school | 22 (55) |
| High school | 17 (42.5) |
| University | 1 (2.5) |
| Ethnicity | |
| White Caucasian | 40 (100) |
| Smoking history | |
| CPD: mean (SD) | 28 (9) |
| Age of onset of smoking: mean (SD) | 15.4 (1.2) |
| Length of time smoking: mean (SD) | 33.5 (12.2) |
| Pack/years: mean (SD) | 45.4 (23.9) |
| Smokers who have made previous cessation attempts: n (%) | 14 (35%) |
| Smokers who had previously used an e-cigarette, either regularly or tried: n (%) | 12 (30%) |
| FTCD: mean (SD) | 8.3 (1.8) |
| Mental health history and status | |
| Age onset of schizophrenia spectrum disorders: mean (SD) | 21.9 (2.8) |
| SAPS at baseline: mean (SD) | 42.9 (23.7) |
| SANS at baseline: mean (SD) | 43.3 (21.7) |
CPD = cigarettes per day; FTCD = Fagerstrom test for cigarette dependence; SANS = Scale for the Assessment of Negative Symptoms; SAPS = Scale for the Assessment of Positive Symptoms.