Table 1.
Tobacco User Groups
| Tobacco user groups | Definition |
|---|---|
| All tobacco users (n = 8882) | All current established every day or intermittent cigarette, cigar, cigarillo, filtered cigar, pipe, hookah, smokeless, snus pouches, dissolvable, and e-cigarette users. |
| Exclusive combustible product user (n = 5576) | |
| Every day (n = 3176) | Current users who are both established and every day users of only cigarette, cigar, cigarillo, filtered cigar, pipe, and/or hookah; not users of any other tobacco products. |
| Intermittent (n = 2400) | Current experimental or someday users who use only cigarette, cigar, cigarillo, filtered cigar, pipe, and/or hookah; not users of any other tobacco products. |
| Exclusive smokeless product user (n = 476) | |
| Every day (n = 355) | Current users who are both established and every day users of only smokeless, snus pouches, and/or dissolvable products; not using any other tobacco products. |
| Intermittent (n = 121) | Current experimental or someday users of only smokeless, snus pouches, and/or dissolvable tobacco; not using any other tobacco products. |
| Exclusive e-cigarette user (n = 258) | |
| Every day (n = 152) | Current users who are both established and every day users of only e-cigarettes; not using any other tobacco products. |
| Intermittent (n = 106) | Current experimental or someday users of only e-cigarettes; not using any other tobacco products. |
| Poly user (n = 2572) | |
| Every day (n = 1983) | Current established every day user of combustibles, smokeless, and/or e-cigarettes and daily or intermittent user of at least one other category. |
| Intermittent (n = 589) | Current experimental or someday users of combustibles, smokeless, and/or e-cigarettes and intermittent user of at least one other category. |
| All nonusers (n = 2122) | All former users and never users. |
| Former (n = 559) | Former established or experimental cigarette, cigar, cigarillo, filtered cigar, pipe, hookah, smokeless tobacco, snus pouches, dissolvable, and/or e-cigarette users or former NRT users. |
| Never (n = 1563) | Never used any tobacco product (cigarette, cigar, cigarillo, filtered cigar, pipe, hookah, smokeless tobacco, snus pouches, dissolvable, and/or e-cigarette) or NRT. |
NNAL = 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol; PATH = Population Assessment of Tobacco and Health.
aEstablished cigarette user: used more than 100 cigarettes in lifetime; established user of product other than cigarettes: used product fairly regularly.
bAll “user” categories (except for former user) exclude pharmaceutical nicotine sources such as nicotine replacement therapy (NRT).
cAll “user” categories (except for never user) can include former users of any tobacco products or pharmaceutical nicotine sources.
dAll retained subjects had urine creatinine levels (10 < UCREAT < 370) to eliminate abnormally dilute or concentrated samples.
eAll retained subjects had values for age, gender, race-ethnicity, educational level, and tobacco use status.
fAll retained subjects included NNAL measurements including those with nondetectable levels (such as nonsmokers).
gExclusions were made for: creatinine <10 or >370 = 250; no measurement of NNAL available = 22; lack of information on product use group = 132; use of NRT = 111; dropping out of the PATH study participants = 3. Wave 1 received subjects (11 522) − exclusions (518) = sample size of 11 004.