Table 1.
Characteristics of PATH Study Wave 4 tobacco use
| W4 continuing cohort* | W4 continuing cohort+refreshment sample† | |||||
| n | Wtd% | 95% CI (%) | n | Wtd% | 95% CI (%) | |
| W4 population | 24 905 | 30 970 | ||||
| Smoking prevalence 12 months before W4 | 8564 | 19.6 | (19.0 to 20.2) | 10 614 | 19.7 | (19.2 to 20.3) |
| Daily cigarette smokers | 6286 | 74.1 | (72.9 to 75.3) | 7705 | 73.3 | (72.1 to 74.4) |
| Non-daily cigarette smokers | 2278 | 25.9 | (24.7 to 27.1) | 2909 | 26.7 | (25.6 to 27.9) |
| Recent quit attempters (in year prior to W4) | 2870 | 32.8 | (31.6 to 33.9) | 3578 | 32.8 | (31.8 to 33.9) |
| Product used in quit attempt | ||||||
| Any e-cigarettes | 363 | 11.6 | (10.2 to 13.0) | 488 | 12.6 | (11.3 to 13.9) |
| Non e-cigarette tobacco product‡ | 67 | 2.3 | (1.7 to 2.9) | 91 | 2.5 | (1.9 to 3.1) |
| No tobacco product but any NRT§ or pharmaceutical aid¶ | 566 | 20.7 | (18.9 to 22.5) | 700 | 20.6 | (18.9 to 22.3) |
| No product | 1874 | 65.4 | (63.4 to 67.4) | 2299 | 64.3 | (62.4 to 66.1) |
| Recent former smokers (RFS) at W4 | 1035 | 11.9 | (10.9 to 12.8) | 1323 | 12.4 | (11.6 to 13.3) |
| Product used by RFS at W4 | ||||||
| Daily e-cigarettes | 110 | 9.3 | (7.1 to 11.5) | 136 | 9.1 | (7.1 to 11.0) |
| Non-daily e-cigarettes | 61 | 5.3 | (3.7 to 6.9) | 94 | 6.2 | (4.7 to 7.7) |
| Non-e-cigarette tobacco product‡ | 188 | 15.6 | (13.0 to 18.1) | 240 | 15.9 | (13.6 to 18.2) |
| Tobacco-free | 676 | 69.8 | (66.5 to 73.1) | 853 | 68.8 | (65.9 to 71.8) |
*The continuing cohort were interviewed on each of the previous PATH waves (W1, W2, W3).
†The W4 continuing cohort + refreshment sample includes all people interviewed for the PATH Study in 2017 (W4). The purpose of the refreshment sample (those first interviewed at W4) was to reset the size of the cohort and reduce the weighting needed to make estimates that were nationally representative of the US population.
‡Other products used by recent former smokers were those from the cigar family (traditional cigars, cigarillos and filtered cigars) and the smokeless family (snus pouches, loose snus, moist snuff, dip, spit and chewing tobacco).
§NRT (nicotine replacement therapy) includes nicotine patch, gum, inhaler, nasal spray, lozenge or pill.
¶Pharmaceutical aid includes Chantix, varenicline, Wellbutrin, Zyban or bupropion.
W4, Wave 4; Wtd, weighted US population estimate (W4 single-wave weights were used).