Table 2:
Descriptive Statistics
| Mean | Standard deviation | Min | Max | |
|---|---|---|---|---|
| Age | 41.09 | 12.55 | 18 | 64 |
| Female | 0.55 | 0.50 | 0 | 1 |
| Higher education | 0.41 | 0.49 | 0 | 1 |
| Income | 52974.67 | 34199.27 | 15000 | 150000 |
| Hispanic | 0.08 | 0.26 | 0 | 1 |
| White | 0.86 | 0.35 | 0 | 1 |
| Black | 0.10 | 0.30 | 0 | 1 |
| Asian | 0.03 | 0.16 | 0 | 1 |
| Employed | 0.60 | 0.49 | 0 | 1 |
| Married | 0.36 | 0.48 | 0 | 1 |
| Family member smokes | 0.44 | 0.50 | 0 | 1 |
| daily smoker | 0.95 | 0.22 | 0 | 1 |
| number of cigarettes smoked per day | 14.61 | 9.34 | 1 | 61 |
| time before first cigarette of the day is smoked: less than 5 minutes | 0.32 | 0.47 | 0 | 1 |
| time before first cigarette of the day is smoked: 5 to 30 minutes | 0.46 | 0.50 | 0 | 1 |
| time before first cigarette of the day is smoked: 31 to 60 minutes | 0.12 | 0.33 | 0 | 1 |
| time before first cigarette of the day is smoked: longer than 60 minutes | 0.10 | 0.31 | 0 | 1 |
| time since last having smoked a cigarette that day: less than 15 minutes | 0.31 | 0.46 | 0 | 1 |
| time since last having smoked a cigarette that day: 15 to 30 minutes | 0.27 | 0.44 | 0 | 1 |
| time since last having smoked a cigarette that day: 30 to 60 minutes | 0.19 | 0.39 | 0 | 1 |
| time since last having smoked a cigarette that day: 1 to 3 hours | 0.11 | 0.31 | 0 | 1 |
| time since last having smoked a cigarette that day: 3 to 6 hours | 0.02 | 0.15 | 0 | 1 |
| time since last having smoked a cigarette that day: more than 6 hours | 0.02 | 0.15 | 0 | 1 |
| time since last having smoked a cigarette in the last few days/weeks: today | 0.90 | 0.30 | 0 | 1 |
| time since last having smoked a cigarette in the last few days/weeks: yesterday | 0.07 | 0.26 | 0 | 1 |
| time since last having smoked a cigarette in the last few days/weeks: in the last week | 0.02 | 0.14 | 0 | 1 |
| time since last having smoked a cigarette in the last few days/weeks: in the last month | 0.00 | 0.06 | 0 | 1 |
| time since last having smoked a cigarette in the last few days/weeks: longer than a month | 0.00 | 0.05 | 0 | 1 |
| quit attempts in the past year: none | 0.53 | 0.50 | 0 | 1 |
| quit attempts in the past year: 1 | 0.32 | 0.47 | 0 | 1 |
| quit attempts in the past year: 2 to 3 | 0.11 | 0.31 | 0 | 1 |
| quit attempts in the past year: more than 4 | 0.03 | 0.18 | 0 | 1 |
| e-cigarette use | 0.36 | 0.48 | 0 | 1 |
| frequency of e-cigarette use: daily | 0.12 | 0.32 | 0 | 1 |
| frequency of e-cigarette use: several times per week | 0.14 | 0.35 | 0 | 1 |
| frequency of e-cigarette use: once per week | 0.04 | 0.20 | 0 | 1 |
| frequency of e-cigarette use: less than once per week | 0.05 | 0.23 | 0 | 1 |
| current urge to smoke (i.e. craving) | 5.19 | 2.49 | 1 | 10 |