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. Author manuscript; available in PMC: 2020 Sep 28.
Published in final edited form as: Tob Control. 2020 May;29(Suppl 3):s203–s215. doi: 10.1136/tobaccocontrol-2019-055255

Table 2:

Correlates of Discontinuing P30D Use Among P30D Users (Adults 18+) at Baseline.

No P30D use at follow-up
Cigarettes ENDS Cigars Hookah Smokeless
Correlates at baseline % 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 (0.30–4)*** 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)***

Notes:

Abbreviations: P30D = past 30-day; ENDS = electronic nicotine delivery system; aOR = adjusted odds ratio; CI = confidence interval; N/A = not applicable

The percentages and odds ratios 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” = 4,350

Denominator N (unweighted number of observations) for aOR in “Cigars” = 3,576

Denominator N (unweighted number of observations) for aOR in “Hookah” = 1,262

Denominator N (unweighted number of observations) for aOR in “Smokeless” = 2,132

Tobacco product types were categorized into five groups: cigarettes, ENDS (e-cigarettes at Wave 1, and e-cigarettes, e-cigars, e-pipes, and e-hookah at Waves 2 & 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 one-year period of time (i.e., 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 (e.g., 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).

1

Analyses 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 standard error greater than 30 or a corresponding denominator less than 50 have been suppressed.

*

p <0.05

**

p <0.01

***

p <0.001