| Any past NSNRT only to cut down (n = 207) | Any past NSNRT only to delay (n = 35) | Any past NSNRT to cut down and delay (n = 73) | No past NSNRT (n = 1248) | |
| % (95% CI) | % (95% CI) | % (95% CI) | % (95% CI) | |
| Made follow-up quit attempt | 57.9 (50.2 to 65.2) | 71.2 (54.3 to 83.7) | 54.3 (38.6 to 69.2) | 54.2 (50.6 to 57.7) |
| Used NRT at follow-up quit attempt*** | 44.1 (36.5 to 52.0) | 34.2 (19.6 to 52.7) | 48.3 (33.8 to 63.2) | 18.1 (15.6 to 20.8) |
| Reduced cigarettes/day ⩾50% by follow-up | 33.8 (25.8 to 42.9) | 32.2 (17.8 to 51.2) | 19.6 (11.6 to 31.0) | 31.6 (28.7 to 34.8) |
| Quit by follow-up | 17.9 (11.4 to 27.0) | 24.2 (12.1 to 42.6) | 12.2 (6.2 to 22.5) | 18.6 (16.1 to 21.4) |
†Table entries are weighted percentages; *p<0.05, **p<0.01, ***p<0.001.