Correlates at baseline | No P30D use at follow-up | |||||||||||||||||||
Cigarettes | ENDS | Cigars | Hookah | Smokeless | ||||||||||||||||
% | 95% CI | aOR1 | 95% CI | % | 95% CI | aOR1 | 95% CI | % | 95% CI | aOR1 | 95% CI | % | 95% CI | aOR1 | 95% CI | % | 95% CI | aOR1 | 95% CI | |
Overall | 13.4 | (12.8-14.1) | N/A | N/A | 52.6 | (50.9-54.4) | N/A | N/A | 48.6 | (47.0-50.2) | N/A | N/A | 63.8 | (61.6-66.0) | N/A | N/A | 25.9 | (24.2-27.7) | N/A | N/A |
DEMOGRAPHIC CHARACTERISTICS | ||||||||||||||||||||
Age group | ||||||||||||||||||||
18-24 | 21.6 | (20.1-23.3) | -- | -- | 55.6 | (52.8-58.4) | -- | -- | 51.7 | (49.6-53.9) | -- | -- | 61.4 | (59.0-63.9) | -- | -- | 33.7 | (30.4-37.2) | -- | -- |
25-39 | 13.7 | (12.6-14.9) | 0.7 | (0.6-0.9)*** | 52.2 | (49.6-54.9) | 1.0 | (0.8-1.2) | 49.7 | (46.9-52.5) | 1.0 | (0.8-1.1) | 67.9 | (63.0-72.4) | 1.3 | (0.9-2.0) | 31.9 | (28.3-35.8) | 1.2 | (0.9-1.6) |
40-54 | 9.6 | (8.6-10.6) | 0.6 | (0.5-0.7)*** | 54.5 | (51.0-58.0) | 1.1 | (0.9-1.4) | 47.7 | (44.4-51.0) | 0.7 | (0.6-1.0)* | 68.2 | (57.2-77.5) | 1.7 | (0.6-4.4) | 18.5 | (14.6-23.0) | 0.9 | (0.6-1.3) |
55+ | 11.9 | (10.4-13.5) | 0.8 | (0.6-1.0) | 44.9 | (40.4-49.5) | 0.8 | (0.6-1.1) | 42.3 | (37.7-46.9) | 0.4 | (0.3-0.6)*** | † | † | † | † | 17.7 | (13.2-23.2) | 1.0 | (0.6-1.6) |
Sex | ||||||||||||||||||||
Female | 12.7 | (11.8-13.7) | -- | -- | 52.6 | (50.0-55.1) | -- | -- | 53.1 | (50.5-55.6) | -- | -- | 64.4 | (61.2-67.5) | -- | -- | 48.6 | (36.6-60.8) | -- | -- |
Male | 14.1 | (13.2-15.0) | 1.0 | (0.9-1.2) | 52.6 | (50.4-54.9) | 1.1 | (0.9-1.3) | 46.8 | (44.8-48.8) | 0.8 | (0.7-1.0)* | 63.4 | (60.4-66.2) | 1.1 | (0.8-1.5) | 24.2 | (22.5-25.9) | 0.7 | (0.4-1.0)* |
Race/ethnicity | ||||||||||||||||||||
Non-Hispanic White | 11.8 | (11.0-12.5) | -- | -- | 50.5 | (48.6-52.3) | -- | -- | 52.5 | (50.1-54.8) | -- | -- | 67.6 | (64.2-70.8) | -- | -- | 23.4 | (21.6-25.3) | -- | -- |
Non-Hispanic Black | 12.7 | (11.4-14.1) | 1.0 | (0.9-1.2) | 62.4 | (57.3-67.2) | 1.3 | (1.0-1.8)* | 35.9 | (33.0-39.0) | 0.7 | (0.5-0.8)*** | 65.8 | (61.6-69.7) | 1.0 | (0.6-1.6) | 40.6 | (30.1-52.0) | 1.1 | (0.6-2.0) |
Non-Hispanic Other (includes two or more races) | 18.0 | (15.2-21.1) | 1.2 | (0.9-1.7) | 48.5 | (41.6-55.6) | 0.9 | (0.7-1.3) | 50.7 | (44.5-56.9) | 1.2 | (0.8-1.8) | 50.5 | (41.9-59.0) | 0.5 | (0.3-1.0)* | 32.1 | (23.7-41.8) | 1.1 | (0.7-1.9) |
Hispanic | 20.5 | (18.5-22.6) | 1.3 | (1.1-1.6)* | 60.4 | (56.6-64.2) | 1.2 | (1.0-1.6) | 50.2 | (46.4-54.0) | 1.0 | (0.8-1.3) | 61.4 | (57.6-65.0) | 0.8 | (0.6-1.1) | 50.7 | (41.1-60.2) | 1.5 | (0.9-2.7) |
Sexual orientation | ||||||||||||||||||||
Straight/Heterosexual | 13.3 | (12.7-14.0) | -- | -- | 52.5 | (50.6-54.4) | -- | -- | 48.6 | (46.9-50.4) | -- | -- | 63.6 | (61.2-66.0) | -- | -- | 25.0 | (23.3-26.8) | -- | -- |
Gay or Lesbian | 11.3 | (8.4-15.0) | 0.7 | (0.5-1.1) | 51.6 | (43.2-59.8) | 0.9 | (0.6-1.4) | 50.2 | (43.0-57.5) | 1.6 | (1.0-2.6)* | 62.1 | (49.7-73.1) | 1.3 | (0.6-2.9) | † | † | † | † |
Bisexual | 14.5 | (11.9-17.7) | 1.1 | (0.8-1.3) | 53.3 | (47.8-58.7) | 0.9 | (0.7-1.3) | 48.1 | (42.3-54.0) | 1.3 | (0.8-2.0) | 65.0 | (56.9-72.4) | 1.1 | (0.7-1.7) | † | † | † | † |
Something else | 17.1 | (12.0-23.9) | 0.9 | (0.5-1.7) | 44.8 | (34.3-55.8) | 0.6 | (0.3-1.1) | 39.9 | (30.2-50.5) | 0.9 | (0.4-2.0) | 71.8 | (58.9-81.8) | 1.0 | (0.4-2.6) | † | † | † | † |
Educational attainment | ||||||||||||||||||||
Less than high school or some high school (no diploma) or GED | 9.1 | (8.0-10.2) | -- | -- | 54.4 | (51.4-57.4) | -- | -- | 47.6 | (44.4-50.9) | -- | -- | 62.9 | (58.1-67.5) | -- | -- | 27.4 | (24.0-31.1) | -- | -- |
High school graduate—diploma | 12.4 | (11.2-13.6) | 1.2 | (1.0-1.5) | 54.3 | (51.4-57.1) | 1.1 | (0.9-1.3) | 47.4 | (44.1-50.8) | 1.0 | (0.8-1.3) | 64.5 | (59.5-69.1) | 0.9 | (0.6-1.3) | 24.4 | (21.5-27.6) | 1.2 | (0.8-1.8) |
Some college (no degree) or associate degree | 14.5 | (13.3-15.8) | 1.4 | (1.1-1.6)*** | 50.5 | (48.2-52.9) | 0.9 | (0.8-1.1) | 46.8 | (44.0-49.6) | 1.0 | (0.8-1.2) | 64.3 | (60.4-68.0) | 0.7 | (0.5-1.1) | 26.0 | (22.6-29.6) | 0.9 | (0.6-1.4) |
Bachelor’s degree or more | 22.6 | (20.6-24.7) | 1.5 | (1.2-1.8)** | 53.0 | (48.3-57.5) | 1.0 | (0.8-1.4) | 54.5 | (50.5-58.5) | 1.1 | (0.8-1.6) | 62.6 | (56.4-68.3) | 0.7 | (0.4-1.2) | 26.7 | (21.7-32.3) | 0.9 | (0.6-1.5) |
Annual household income | ||||||||||||||||||||
< $25,000 | 11.0 | (10.2-11.9) | -- | -- | 54.1 | (51.8-56.4) | -- | -- | 45.9 | (43.7-48.0) | -- | -- | 62.0 | (58.6-65.3) | -- | -- | 33.6 | (30.2-37.2) | -- | -- |
$25,000- $74,999 | 13.9 | (12.8-15.0) | 1.3 | (1.1-1.5)** | 52.8 | (49.8-55.8) | 1.0 | (0.8-1.2) | 50.4 | (47.7-53.2) | 1.1 | (0.9-1.4) | 66.4 | (62.6-70.1) | 1.2 | (0.9-1.6) | 21.8 | (18.6-25.4) | 0.8 | (0.5-1.1) |
≥ $75,000 | 20.6 | (18.6-22.8) | 1.5 | (1.3-1.9)*** | 47.4 | (43.4-51.6) | 0.8 | (0.6-1.0)* | 51.2 | (47.4-55.0) | 1.2 | (0.9-1.6) | 64.0 | (57.6-70.0) | 1.2 | (0.8-1.8) | 23.4 | (19.2-28.2) | 1.1 | (0.7-1.8) |
Not reported | 13.8 | (11.8-16.0) | 1.2 | (0.9-1.6) | 54.9 | (48.2-61.4) | 1.1 | (0.7-1.6) | 52.1 | (46.3-57.8) | 0.8 | (0.6-1.1) | 63.9 | (56.1-71.0) | 1.0 | (0.6-1.7) | 24.8 | (19.1-31.6) | 0.9 | (0.5-1.6) |
TOBACCO USE CORRELATES | ||||||||||||||||||||
Use of cigarettes | ||||||||||||||||||||
No P30D use | N/A | N/A | N/A | N/A | 45.2 | (41.7-48.8) | -- | -- | 49.6 | (46.5-52.6) | -- | -- | 64.3 | (61.2-67.2) | -- | -- | 16.4 | (14.5-18.6) | -- | -- |
P30D use | N/A | N/A | N/A | N/A | 54.9 | (53.1-56.6) | 1.5 | (1.2-1.8)*** | 48.0 | (46.3-49.8) | 1.1 | (0.9-1.3) | 63.4 | (60.4-66.4) | 1.1 | (0.8-1.5) | 38.8 | (35.7-42.1) | 1.9 | (1.5-2.5)*** |
Use of ENDS | ||||||||||||||||||||
No P30D use | 13.8 | (13.0-14.6) | -- | -- | N/A | N/A | N/A | N/A | 48.2 | (46.2-50.2) | -- | -- | 65.0 | (62.4-67.6) | -- | -- | 22.0 | (20.1-24.0) | -- | -- |
P30D use | 12.8 | (11.7-13.9) | 1.0 | (0.8-1.1) | N/A | N/A | N/A | N/A | 49.6 | (46.9-52.3) | 1.0 | (0.8-1.2) | 60.3 | (56.4-64.0) | 0.8 | (0.6-1.1) | 43.7 | (38.9-48.7) | 1.3 | (0.9-1.9) |
Use of cigars | ||||||||||||||||||||
No P30D use | 12.9 | (12.2-13.6) | -- | -- | 52.4 | (50.3-54.4) | -- | -- | N/A | N/A | N/A | N/A | 65.8 | (63.0-68.5) | -- | -- | 22.4 | (20.6-24.4) | -- | -- |
P30D use | 15.6 | (14.3-17.0) | 1.0 | (0.9-1.2) | 53.5 | (50.5-56.5) | 0.9 | (0.7-1.1) | N/A | N/A | N/A | N/A | 60.8 | (57.0-64.6) | 0.8 | (0.6-1.1) | 38.2 | (33.8-42.7) | 0.8 | (0.6-1.2) |
Use of hookah | ||||||||||||||||||||
No P30D use | 12.9 | (12.3-13.6) | -- | -- | 53.0 | (51.1-54.9) | -- | -- | 48.9 | (47.1-50.7) | -- | -- | N/A | N/A | N/A | N/A | 24.6 | (22.8-26.3) | -- | -- |
P30D use | 21.3 | (18.4-24.4) | 1.0 | (0.8-1.3) | 49.5 | (45.2-53.7) | 0.8 | (0.6-1.0)* | 46.2 | (42.8-49.7) | 0.8 | (0.6-0.9)* | N/A | N/A | N/A | N/A | 46.7 | (39.4-54.2) | 1.2 | (0.7-1.9) |
Use of smokeless | ||||||||||||||||||||
No P30D use | 13.3 | (12.7-14.0) | -- | -- | 52.5 | (50.8-54.3) | -- | -- | 48.5 | (46.7-50.3) | -- | -- | 63.6 | (61.3-66.0) | -- | -- | N/A | N/A | N/A | N/A |
P30D use | 15.6 | (13.2-18.4) | 1.0 | (0.7-1.4) | 52.5 | (46.7-58.2) | 1.0 | (0.7-1.3) | 49.1 | (44.8-53.5) | 1.0 | (0.7-1.3) | 64.9 | (57.1-72.1) | 1.1 | (0.7-1.8) | N/A | N/A | N/A | N/A |
Frequency of use of the given product (in the past 30 days) | ||||||||||||||||||||
1-19 days | 28.9 | (27.4-30.5) | -- | -- | 57.5 | (55.6-59.4) | -- | -- | 44.1 | (41.8-46.5) | -- | -- | 51.8 | (48.3-55.3) | -- | -- | 42.2 | (37.6-46.8) | -- | -- |
20-30 days | 5.9 | (5.5-6.3) | 0.2 | (0.2-0.2)*** | 27.0 | (24.3-29.8) | 0.3 | (0.3-0.4)*** | 22.0 | (18.9-25.5) | 0.4 | (0.3-0.5)*** | 44.2 | (35.9-52.8) | 0.7 | (0.4-1.0)* | 10.8 | (9.4-12.5) | 0.2 | (0.2-0.3)*** |
The percentages and ORs in the table are based on weighted data.
Denominator N (unweighted number of observations) for aOR in ‘Cigarettes’=17 792
Denominator N (unweighted number of observations) for aOR in ‘ENDS’=4350
Denominator N (unweighted number of observations) for aOR in ‘Cigars’=3576
Denominator N (unweighted number of observations) for aOR in ‘Hookah’=1262
Denominator N (unweighted number of observations) for aOR in ‘Smokeless’=2132
Tobacco product types were categorised into five groups: cigarettes, ENDS (e-cigarettes at Wave 1, and e-cigarettes, e-cigars, e-pipes and e-hookah at Waves 2 and 3), cigars (traditional cigars, cigarillos, filtered cigars), hookah and smokeless tobacco (loose snus, moist snuff, dip, spit, chewing tobacco and snus pouches).
For each of the five tobacco products, and for any tobacco product, use is defined with respect to the given tobacco product/any tobacco product: P30D use is defined as using the product at least once in the past 30 days.
The outcome ‘discontinuing P30D use’ is defined as no P30D use at follow-up (vs P30D use at follow-up) among P30D users at baseline. Since no P30D use at baseline is defined with respect to each tobacco product, P30D use of ‘other’ tobacco products are considered as correlates of no P30D use of the given tobacco product at follow-up.
Tobacco dependence was not assessed among all P30D users and thus is not included in these analyses.
GEE logistic regression analyses were used to assess correlates of no P30D use at follow-up among P30D users at baseline over a 1 year period of time (ie, Wave 1–Wave 2 and Wave 2–Wave 3), including up to two change data points per individual and statistically controlling for the correlation among observations from the same individuals. All correlates reflect baseline measurement for each wave pair (eg, when evaluating change between Wave 1 and Wave 2, the age correlate reflects a person’s age at Wave 1, and when evaluating change between Wave 2 and Wave 3, the age correlate reflects a person’s age at Wave 2).
1Analyses adjusted for age group, sex, race/ethnicity, sexual orientation, educational attainment, annual household income, each tobacco use correlate and wave.
†Estimates with either a relative SE greater than 30 or a corresponding denominator less than 50 have been suppressed.
*p<0.05, **p<0.01, ***p<0.001.
aOR, adjusted OR; ENDS, electronic nicotine delivery system;GEE, generalised estimating equation; N/A, not applicable; P30D, past 30-day.