Table 2.
Estimated number of behavioral transitions in ENDS and cigarette use among US adults over Waves 3–5, PATH Study, 2015–2019.
| Products | Behavioral transitions (total number) | n (transitioned) | Wt% (95% CI) | Estimated No. of US population experienced transition | Ratio of initiation or relapse vs. cessation |
|---|---|---|---|---|---|
| ENDS | Initiation (n = 23,985) | 964 | 1.7 (1.6–1.9) | 5,946,793 | 1.4 |
| Relapse (n = 14,210) | 1694 | 12.1 (11.4–12.8) | 8,300,946 | ||
| Progression (n = 3044) | 356 | 13.0 (11.4–14.6) | 1,755,929 | ||
| Cessation (n = 4492) | 1939 | 46.3 (44.4–48.2) | 9,857,799 | ||
| Cigarettes | Initiation (n = 11,845) | 468 | 1.6 (14–1.9) | 2,421,155 | 0.8 |
| Relapse (n = 15,156) | 1472 | 4.8 (4.5–5.2) | 8,020,106 | ||
| Progression (n = 4632) | 1062 | 21.1 (19.7–22.6) | 5,338,237 | ||
| Cessation (n = 16,147) | 2241 | 14.0 (13.3–14.8) | 12,473,618 |
W = wave, Wt% = weighted percentage, CI = confidence interval, ENDS = electronic nicotine delivery system.
Weighted percentages and CIs, and estimated numbers were calculated using PATH Wave 5 all-wave weights.