Definitions
| Relapse Behaviors | Baseline Tobacco Use Group (W1 or W2) | Follow-up Outcome (W2 or W3) |
| Reuptake1
(Table 2 and online supplementary table 2) | Adults and Youth, Previous Use: For any tobacco and each tobacco product category4, had ever used the product (even once or twice) but not in the past 30 days. | Adults and Youth, Reuptake: Past 30-day use of the given tobacco product |
| Relapse2
(Table 3) | Adults only, Former Established Use: For cigarettes, had previously smoked at least 100 cigarettes in their lifetime, but had not smoked cigarettes in the past 30 days and not currently smoking every day or some days. For the other tobacco product categories, had previously used the product “fairly regularly” but not in the past 30 days, and not currently using every day or some days. | Adults only, Relapse: Current (every day/ some days) use of the given tobacco product |
| Relapse3
(online supplementary table 3) | Adults only, Recent Former Established Use: For cigarettes, had previously smoked at least 100 cigarettes in their lifetime, had quit smoking in the past 12 months, had not smoked cigarettes in the past 30 days and not currently smoking every day or some days. For the other tobacco product categories, had previously used the product “fairly regularly,” had quit in the last 12 months, and had not used the product in the past 30 days, and not currently using every day or some days. | Adults only, Relapse: Current (every day/ some days) use of the given tobacco product |
1The respondent could have been a previous user for varied amounts of time prior to reuptake, ranging from 31 days to 70+ years.
2The respondent could have been a former established user for varied amounts of time prior to relapse, ranging from 31 days to 70+ years.
3The respondent could only have become a former established user within the past 12 months, with previous use ranging from 31 days to 12 months.
4Tobacco product categories include cigarettes, ENDS (e-cigarettes at W1 and e-cigarettes, e-cigars, e-pipes, and e-hookah at W2 and W3), cigars (traditional cigars, cigarillos, and filtered cigars), hookah, and smokeless tobacco (loose snus, moist snuff, dip, spit, chewing tobacco, and snus pouches)
W1, Wave 1; W2, Wave 2; W3, Wave 3.