Intention to quit in response to the introduction of the ban on smoking in public places: February–June 2007
| Response | February % (n, 95% CI) | March % (n, 95% CI) | April % (n, 95% CI) | May % (n, 95% CI) | June % (n, 95% CI) |
| Don't know | 0.9 (4, 0.2 to 2.2) | 0.4 (3, 0.08 to 1.1) | 0.2 (1, 0.006 to 1.3) | 0 (0) | 0.5 (2, 0.07 to 1.9) |
| I plan to quit before the ban comes into force | 18.4 (84, 14.8 to 21.9) | 26 (215, 23 to 29) | 19 (84, 15.3 to 22.6) | 12 (54, 9 to 15) | 7 (26, 4.6 to 10.1) |
| I plan to quit when the ban comes into force | 6.8 (31, 4.7 to 9.5) | 8.8 (73, 7 to 11) | 9.7 (43, 7.1 to 12.8) | 11.6 (52, 8.6 to 14.5) | 15.9 (59, 12.2 to 19.7) |
| No definite plan | 73.9 (337, 69.7 to 77.8) | 64.8 (536, 61.6 to 68.1) | 71.7 (315, 66.9 to 75.3) | 76.4 (344, 72.5 to 80.4) | 76.5 (283, 72.2 to 80.8) |
| Total number | 457 | 827 | 443 | 450 | 370 |