Table 2.
Baseline characteristics of participants randomized to treatment.
| Variable | Randomized (N=764) |
|
|---|---|---|
| Mean/percent | SD | |
| Demographic variables | ||
| Age (mean) | 35.6 | 10.25 |
| 18–29 | 33.1 | |
| 30–49 | 55.9 | |
| 50–64 | 10.6 | |
| 65 and older | 0.4 | |
| Gender (percent female) | 60.5 | |
| Education (highest grade completed) | ||
| Grade 1–8 | 0.3 | |
| Grade 9–11 | 2.4 | |
| Grade 12 or GED | 19.8 | |
| College 1–3 years | 48.4 | |
| College 4 years or more | 29.2 | |
| Race | ||
| White | 86.4 | |
| Black | 7.5 | |
| Asian | 3.7 | |
| Native Hawaiian or Other Pacific Islander | 0.5 | |
| American Indian or Alaska Native | 2.0 | |
| Income | ||
| <US$10,000 | 3.4 | |
| US$10,000–US$20,000 | 8.7 | |
| US$20,000–$30,000 | 16.4 | |
| US$30,000–$40,000 | 17.5 | |
| US$40,000–$50,000 | 13.9 | |
| US$50,000–US$75,000 | 19.4 | |
| US$75,000–$100,000 | 10.3 | |
| >US$100,000 | 10.4 | |
| Marital status | ||
| Married | 41.5 | |
| Cohabitating | 16.0 | |
| Single | 19.0 | |
| Separated | 3.5 | |
| Divorced | 18.7 | |
| Widowed | 1.3 | |
| Employment status | ||
| Full-time | 71.3 | |
| Part-time | 9.8 | |
| Unemployed | 4.6 | |
| Homemaker | 5.9 | |
| Retired | 2.1 | |
| Student | 6.3 | |
| Smoking variables | ||
| Age at first puff | 14.08 | 3.55 |
| Age onset of daily smoking | 16.95 | 3.44 |
| Daily smoking rate | 20.29 | 9.91 |
| No. quit attempts past year | 2.86 | 4.83 |
| Baseline stage of change | ||
| Precontemplation | 0.1 | |
| Contemplation | 11.6 | |
| Preparation | 88.2 | |
| Fagerström Test for Nicotine Dependence | 5.04 | 2.36 |
| Desire to quit | 9.02 | 1.43 |
| Confidence in quitting | 6.16 | 2.25 |
| Internet use variables | ||
| Duration of Internet use | ||
| Less than 1 year | 2.5 | |
| 1–2 years | 2.1 | |
| 2–5 years | 20.8 | |
| More than 5 years | 74.6 | |
| Frequency of Internet use | ||
| Several times a day | 74.3 | |
| About once a day | 17.0 | |
| 3–5 days per week | 5.9 | |
| 1–2 days per week | 2.1 | |
| Every few weeks or less often | 0.7 | |
| Type of Internet connection | ||
| Dial-up connection | 16.8 | |
| Broadband connection | 83.2 | |
| Health status variables | ||
| Perceived health status | ||
| Excellent | 8.1 | |
| Very good | 37.5 | |
| Good | 36.2 | |
| Fair | 14.4 | |
| Poor | 3.8 | |
| Ever had smoking related illness (percent yes) | 59.1 | |
| Body mass index | ||
| Underweight | 2.0 | |
| Normal weight | 39.3 | |
| Overweight | 32.0 | |
| Obese | 26.7 | |
| Psychosocial variables | ||
| Any alcohol use (percent yes) | 70.4 | |
| Used more than meant to past year (percent yes) | 61.8 | |
| Wanted or needed to cut down (percent yes) | 27.2 | |
| Perceived Stress Scale | 6.25 | 3.25 |
| Center for Epidemiological Studies—Depression Scale | 9.38 | 5.79 |