Table 4.
Comparison of smoking related variables in the web and telephone sample
| Web sample (n = 1,668) |
Telephone sample (n = 404) |
Significance tests |
|
|---|---|---|---|
| Number of cigarettes smoked per day (mean; SD) | 15.3; 8.1 | 15.0; 8.5 | t = -0.54 |
| Number of previous quit attempts (mean: SD) | 2.0; 2.2 | 2.2; 2.5 | t = 1.27 |
| Time (in minutes) before smoking the first cigarette (mean; SD) | 93.1; 189.2 | 86.5; 154.9 | t = -0.69 |
| Attitude towards smoking (%) | χ2 = 32.12*** | ||
| Very positive | 1.5 | 0.8 | (df = 6) |
| Positive | 12.7 | 9.2 | |
| Neither positive nor negative | 64.3 | 60.0 | |
| Negative | 17.6 | 23.3 | |
| Very negative | 2.4 | 6.7 | |
| Refused | 0.0 | 0.0 | |
| Don't know | 1.6 | 0.0 | |
| Intention to quit smoking (%) | χ2 = 51.25*** | ||
| Within the next month | 5.6 | 7.8 | (df = 5) |
| Within the next 6 months | 19.3 | 20.0 | |
| Sometime in the future, beyond 6 months | 56.6 | 44.7 | |
| Never | 14.3 | 26.7 | |
| Refused | 0.0 | 0.3 | |
| Don't know | 4.2 | 0.6 | |
| Self efficacy for quitting (%) | χ2 = 29.38*** | ||
| Not at all sure | 35.4 | 30.6 | (df = 6) |
| Slightly sure | 35.0 | 29.5 | |
| Moderately sure | 16.5 | 22.3 | |
| Very sure | 6.0 | 5.6 | |
| Extremely sure | 4.5 | 9.7 | |
| Refused | 0.0 | 0.3 | |
| Don't know | 2.7 | 1.9 |
* p < 0.05
** p < 0.01
*** p < 0.001