| Characteristic | Self-reported anxiety or depression, %† | |
|---|---|---|
| Reported n = 2379 | Not reported n = 2787 | |
| Age, mean (95% CI), yr | 46.2 (45.6-46.7) | 48.4 (47.9-49.0) |
| Sex | ||
| Male | 36.3 | 63.7 |
| Female | 47.7 | 52.3 |
| Years of formal education, mean (95% CI) | 13.3 (13.2-13.4) | 13.3 (13.2-13.4) |
| Smoking-related illness, % | ||
| Heart disease, heart attack, heart failure, stroke | 11.6 | 10.3 |
| Diabetes | 13.8 | 12.4 |
| Cancer | 4.0 | 3.7 |
| COPD | 11.7 | 5.9 |
| Cigarettes per day, mean (95% CI) | 17.5 (17.1-17.9) | 15.8 (15.5-16.2) |
| No. of years smoking, mean (95% CI) | 26.5 (25.9-27.1) | 28.3 (27.8-28.9) |
| Time (min) to first cigarette in the morning‡ | ||
| > 60 | 16.2 | 22.7 |
| 31-60 | 17.6 | 20.4 |
| 6-30 | 34.4 | 35.6 |
| ≤ 5 | 31.8 | 21.3 |
| Readiness to quit§ | ||
| Ready in next 30 d | 29.8 | 30.3 |
| Ready in next 6 mo | 41.7 | 40.6 |
| Not ready | 28.5 | 29.2 |
| Cessation self-efficacy, mean score (95% CI)¶ | 4.9 (4.7-5.0) | 5.3 (5.2-5.4) |
Note: CI = confidence interval, COPD = chronic obstructive pulmonary disease.
*Self-reported presence of current anxiety or depression: "Do you have any of the following conditions?: anxiety or depression."
†Unless stated otherwise.
‡In response to the question, "How soon after you wake up do you smoke your first cigarette?"
§In response to the question, "Which of the following best describes your feelings about quitting smoking right now?"
¶In response to the question, "On a scale of 0 to 10 how confident are you that you would be able to quit smoking at this time? (0 = not at all confident, 10 = extremely confident)."