Distribution and changes in smoking status, adjusted results using inverse probability weighting (percentages in parentheses)
| Years | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | Baseline total (2005–2011) |
|---|---|---|---|---|---|---|---|---|---|
| Attained age of panel samples | 50–59 | 51–60 | 52–61 | 53–62 | 54–63 | 55–64 | 56–65 | 57–66 | 50–65 |
| Smoking status | |||||||||
| Never-smoker | 14 646 (47.6) | 14 529 (47.2) | 14 430 (46.9) | 14 304 (46.5) | 14 079 (45.8) | 13 907 (45.2) | 13 632 (44.3) | 13 625 (44.3) | 99 527 (46.2) |
| Quitter* | 6735 (21.9) | 7215 (23.5) | 7542 (24.5) | 8048 (26.2) | 8337 (27.1) | 9314 (30.3) | 9431 (30.7) | 9687 (31.5) | 56 623 (26.3) |
| Current smoker† | 9392 (30.5) | 9028 (29.3) | 8801 (28.6) | 8421 (27.4) | 8357 (27.2) | 7552 (24.5) | 7710 (25.1) | 7462 (24.3) | 59 261 (27.5) |
| Number of cigarettes smoked | |||||||||
| 1–10 | 1307 (13.9) | 1389 (15.4) | 1349 (15.3) | 1402 (16.7) | 1541 (18.4) | 1862 (24.7) | 1845 (23.9) | 1823 (24.4) | 10 694 (18.1) |
| 11–20 | 4147 (44.2) | 4037 (44.7) | 4047 (46.0) | 3884 (46.1) | 3861 (46.2) | 3889 (51.5) | 3791 (49.2) | 3755 (50.3) | 27 656 (46.7) |
| 21–30 | 2805 (29.9) | 2570 (28.5) | 2488 (28.3) | 2326 (27.6) | 2224 (26.6) | 1368 (18.1) | 1525 (19.8) | 1337 (17.9) | 15 307 (25.8) |
| 31 or more | 1133 (12.1) | 1032 (11.4) | 917 (10.4) | 809 (9.6) | 731 (8.8) | 432 (5.7) | 549 (7.1) | 547 (7.3) | 5603 (9.5) |
| Time frame for changes | 2005–2006‡ | 2006–2007 | 2007–2008 | 2008–2009 | 2009–2010‡ | 2010–2011 | 2011–2012 | Average changes | |
| Changes | |||||||||
| Relapsed smoking (quitter* to current) | 295 (4.4) | 318 (4.4) | 270 (3.6) | 310 (3.9) | 180 (2.2) | 472 (5.1) | 294 (3.1) | 2138 (3.8) | |
| Stopped smoking (current† to quitter) | 782 (8.3) | 622 (6.9) | 725 (8.2) | 610 (7.2) | 1188 (14.2) | 616 (8.2) | 549 (7.1) | 5093 (8.6) | |
*Responders who had stopped smoking at the time of each survey were used as denominator in the analyses for changes.
†Responders who currently smoked at the time of each survey were used as denominator in the analyses for changes.
‡Time period when tobacco price increase occurred, that is, July 2006 and October 2010.