Occurrence of smoking-related thoughts and microbehaviours among current smokers, by wave
| Wave 1 (2006) | Wave 2 (2007) | Wave 3 (2009) | Linear effect (Coef. 95% CI)‡ | |
|---|---|---|---|---|
| (n=4732†) | (n=4568†) | (n=4336†) | ||
| Indicators of recent thoughts about smoking | ||||
| Think about harm to you (%) | ||||
| 1. Never/don't know | 25.6 | 25.1 | 22.1 | Option1'never’ versus 2'occasionally’ and 3'often’: −0.007(−0.015 to 0.0004)NS; option 1 and 2 versus 3: −0.037(−0.045 to −0.028)*** |
| 2. Occasionally | 35.8 | 39.3 | 44.6 | |
| 3. Often | 38.6 | 35.6 | 33.2 | |
| Think about harm to others (%) | ||||
| 1. Never/don't know | 28.4 | 26.1 | 23.8 | Option 1 versus 2 and 3: −0.025(−0.033 to −0.016)***; option 1 and 2 versus 3: −0.020(−0.029 to −0.011)*** |
| 2. Occasionally | 35.0 | 38.9 | 42.2 | |
| 3. Often | 36.7 | 34.9 | 34.1 | |
| Think about the cost of smoking (%) | ||||
| 1. Never/don't know | 66.9 | 73.4 | 75.4 | Option 1 versus 2 and 3: 0.118 (0.061 to 0.176)***, quadratic effect: −0.019 (−0.034 to −0.005)**; option 1 and 2 versus 3: −0.032 (−0.038 to −0.026)*** |
| 2. Occasionally | 20.8 | 18.1 | 18.9 | |
| 3. Often | 12.3 | 8.6 | 5.8 | |
| Seriously consider quitting (%) | ||||
| 1. Never/don't know | 49.0 | 53.6 | 51.3 | Option 1 versus 2 and 3: 0.121 (0.060 to 0.182)***, quadratic effect: −0.027 (−0.043 to −0.012)**; option 1 and 2 vs 3: −0.025 (−0.032 to −0.018)*** |
| 2. Occasionally | 33.1 | 31.0 | 35.9 | |
| 3. Often | 17.9 | 15.4 | 12.8 | |
| Microbehaviour measures | ||||
| Butt out a cigarette before finishing (%) | ||||
| No | 71.2 | 65.7 | 62.2 | 0.125 (0.065 to 0.186)***, quadratic effect: −0.020 (−0.035 to −0.005)** |
| Yes | 28.8 | 34.3 | 37.8 | |
| Forgo a cigarette due to warning labels (%) | ||||
| Never | 83.9 | 82.2 | 77.3 | 0.031(0.023 to 0.038)*** |
| At least once | 16.1 | 17.8 | 22.7 | |
*Significant at p<0.05;**p<0.01;***p<0.001. NS: not significant.
†These were at least weekly smokers at the time of surveys, including ‘recontacted smokers’ and ‘replenished smokers’. The numbers in some analyses were slightly fewer than the total due to missing cases. Percentages were based on weighted data.
‡‘Coef’ means ‘Coefficient’. All Coefficients were generated by using generalised estimating equations (GEE) modelling, controlled for sociodemographics (ie, age, sex, ethnicity, marital status, highest level of education attained, annual household income) and intention to quit. Where quadratic effect is significant it is stated as such.