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Table 2 Percent of participants reporting past 30-day point prevalence abstinence from smoking at the 3-month follow-up assessment and model information for two logistic regression analyses of factors associated with likelihood of reporting past 30-day abstinence from smoking at the 3-month follow-up assessment

From: Factors associated with past 30-day abstinence from cigarette smoking in a non-probabilistic sample of 15,456 adult established current smokers in the United States who used JUUL vapor products for three months

Predictor variable % P30A Unadjusted Model 1 adjusted Model 2 adjusted
Step1 Step2 Step1 Step2
Unadjusted OR (95% CI) aOR (95% CI) aOR (95% CI) aOR (95% CI) aOR (95% CI)
Sex
 Male 49.0 Ref. Ref. Ref. Ref. Ref.
 Female 44.6 0.84 (0.77–0.91)*** 0.93 (0.84–1.04) 0.93 (0.84–1.04) 0.92 (0.83–1.03) 0.93 (0.83–1.03)
 Transgender 47.1 0.93 (0.53–1.61) 0.74 (0.38–1.45) 0.74 (0.38–1.43) 0.67 (0.35–1.30) 0.68 (0.35–1.31)
Age
 21–24 56.4 Ref. Ref. Ref. Ref. Ref.
 25–34 45.6 0.65 (0.59–0.72)*** 1.01 (0.87–1.18) 1.01 (0.87–1.18) 1.02 (0.87–1.19) 1.02 (0.87–1.19)
 35–44 38.2 0.48 (0.42–0.54)*** 0.93 (0.75–1.15) 0.93 (0.75–1.16) 0.93 (0.75–1.16) 0.93 (0.75–1.16)
 45–54 38.6 0.49 (0.42–0.57)*** 1.10 (0.84–1.46) 1.11 (0.84–1.46) 1.11 (0.84–1.46) 1.10 (0.84–1.46)
 55–64 46.9 0.68 (0.57–0.83)*** 0.91 (0.63–1.30) 0.90 (0.63–1.29) 0.91 (0.63–1.31) 0.91 (0.63–1.31)
 ≥ 65 28.4 0.31 (0.20–0.48)*** 0.91 (0.47–1.75) 0.90 (0.47–1.74) 0.92 (0.48–1.76) 0.92 (0.48–1.76)
Race/Ethnicity
 Non-Hispanic, White 45.7 Ref. Ref. Ref. Ref. Ref.
 Non-Hispanic, Black 49.0 1.14 (0.90–1.44) 1.01 (0.76–1.34) 1.01 (0.76–1.34) 0.99 (0.75–1.32) 0.99 (0.75–1.32)
 Non-Hispanic, American Indian/Alaskan 47.0 1.05 (0.73–1.52) 1.33 (0.85–2.08) 1.33 (0.85–2.09) 1.28 (0.82–1.99) 1.27 (0.81–1.98)
 Non-Hispanic, Asian, Hawaiian or PIa 46.0 1.01 (0.88–1.16) 0.91 (0.77–1.07) 0.90 (0.77–1.07) 0.91 (0.77–1.07) 0.91 (0.77–1.07)
 Non-Hispanic, two or More Races 50.0 1.19 (0.07–19.00) 1.33 (0.08–22.13) 1.30 (0.08–21.72) 1.49 (0.09–24.76) 1.45 (0.09–23.85)
 Hispanicb 52.3 1.30 (1.12–1.51)*** 1.08 (0.91–1.29) 1.08 (0.91–1.29) 1.07 (0.90–1.28) 1.07 (0.90–1.28)
Education
 Not HS graduate 45.3 Ref. Ref. Ref. Ref. Ref.
 GED 48.9 1.16 (0.84–1.60) 1.51 (1.02–2.22)* 1.51 (1.03–2.23)* 1.55 (1.05–2.28)* 1.55 (1.05–2.28)*
 HS graduate 56.4 1.56 (1.20–2.04)*** 1.34 (0.97–1.84) 1.34 (0.97–1.85) 1.37 (0.99–1.88) 1.37 (0.99–1.88)
 Some college or associate’s degree 45.3 1.00 (0.77–1.29) 0.99 (0.72–1.34) 0.99 (0.73–1.36) 1.00 (0.74–1.36) 1.00 (0.74–1.36)
 Bachelor’s degree or higher 43.4 0.93 (0.72–1.20) 0.88 (0.64–1.20) 0.89 (0.65–1.22) 0.90 (0.65–1.22) 0.89 (0.65–1.22)
Household income
 < $25,000 49.3 Ref. Ref. Ref. Ref. Ref.
 $25,000 to $74,999 47.8 0.94 (0.84–1.05) 1.06 (0.93–1.21) 1.06 (0.93–1.22) 1.06 (0.93–1.21) 1.06 (0.93–1.21)
 ≥ $75,000 44.9 0.84 (0.74–0.95)*** 1.12 (0.96–1.30) 1.12 (0.96–1.30) 1.13 (0.97–1.31) 1.13 (0.97–1.31)
U.S. census region
 Northeast 45.0 0.85 (0.75–0.97)* 0.97 (0.82–1.15) 0.97 (0.82–1.14) 0.98 (0.83–1.15) 0.98 (0.83–1.15)
 South 47.9 0.96 (0.85–1.08) 1.10 (0.94–1.28) 1.09 (0.94–1.27) 1.11 (0.95–1.29) 1.11 (0.95–1.29)
 Midwest 46.6 0.91 (0.80–1.03) 0.95 (0.80–1.12) 0.94 (0.80–1.11) 0.95 (0.81–1.12) 0.95(0.81–1.12)
 West 49.0 Ref. Ref. Ref. Ref. Ref.
Age of first smoking
 ≤ 11 years 39.7 Ref. Ref. Ref. Ref. Ref.
 12 to 14 years 39.0 0.97 (0.76–1.23) 0.87 (0.65–1.17) 0.88 (0.65–1.17) 0.87 (0.65–1.17) 0.87 (0.65–1.16)
 15 to 17 years 44.5 1.21 (0.96–1.54) 0.93 (0.70–1.24) 0.93 (0.70–1.24) 0.92 (0.69–1.23) 0.92 (0.69–1.22)
 18 to 24 years 55.0 1.85 (1.47–2.35)*** 1.15 (0.86–1.54) 1.15 (0.86–1.54) 1.14 (0.85–1.53) 1.14 (0.85–1.52)
 ≥ 25 years 51.9 1.64 (1.13–2.37)** 1.34 (0.82–2.19) 1.35 (0.83–2.20) 1.32 (0.81–2.15) 1.31 (0.81–2.14)
Lifetime years of smoking
 ≤ 1 year 62.0 2.79 (1.22–1.59)*** 1.78 (1.29–2.44)*** 1.78 (1.30–2.45)*** 1.80 (1.31–2.48)*** 1.80 (1.31–2.48)***
 1–5 years 56.6 2.23 (1.97–2.54)*** 1.57 (1.20–2.05)** 1.57 (1.20–2.05)** 1.58 (1.21–2.07)** 1.59 (1.21–2.07)**
 6–10 years 44.8 1.39 (2.35–3.31)*** 1.26 (0.99–1.61) 1.27 (0.99–1.62) 1.28 (1.00–1.63)* 1.28 (1.00–1.64)*
 11–20 years 38.3 1.06(0.93–1.21) 1.14 (0.92–1.40) 1.14 (0.92–1.40) 1.14 (0.93–1.41) 1.15 (0.93–1.41)
 ≥ 20 years 36.9 Ref. Ref. Ref. Ref. Ref.
Number of smoking days in 30 days prior to baseline
 1–9 days 63.6 2.91 (2.56–3.30)*** 2.87 (2.40–3.43)*** 2.88 (2.41–3.44)*** 2.86 (2.40–3.42)*** 2.86 (2.40–3.42)***
 10–19 days 60.1 2.50 (2.19–2.85)*** 2.28 (1.91–2.71)*** 2.28 (1.92–2.72)*** 2.26 (1.90–2.69)*** 2.26 (1.90–2.69)***
 20–29 days 51.3 1.75 (1.58–1.94)*** 1.55 (1.36–1.77)*** 1.56 (1.36–1.78)*** 1.55 (1.36–1.78)*** 1.55 (1.36–1.77)***
 30 days 37.6 Ref. Ref. Ref. Ref. Ref.
Cigarettes smoked per day at baseline
 1–9 cigarettes per day 54.1 Ref. Ref. Ref. Ref. Ref.
 10–19 cigarettes per day 41.3 0.60 (0.54–0.66)*** 0.91 (0.80–1.03) 0.91 (0.80–1.04) 0.91 (0.80–1.04) 0.91 (0.80–1.04)
 ≥ 20 cigarettes per day 36.2 0.48 (0.43–0.54)*** 0.84 (0.71–0.99)* 0.84 (0.71–0.99)* 0.84 (0.71–0.99)* 0.84 (0.71–0.99)*
Number of days of JUUL use in past 30 days (at 3 months)
 0 days 27.1 0.34 (0.18–0.64) – – – –
 1–9 days 41.1 0.64 (0.54–0.75) 0.56 (0.45–0.68)*** 0.55 (0.45–0.68)*** 0.53 (0.43–0.65)*** 0.53 (0.43–0.65)***
 10–19 days 32.9 0.45 (0.39–0.52) 0.38 (0.32–0.45)*** 0.38 (0.32–0.45)*** 0.36 (0.31–0.43)*** 0.36 (0.31–0.43)***
 20–29 days 40.4 0.62 (0.55–0.69) 0.51 (0.45–0.58)*** 0.51 (0.44–0.58)*** 0.50 (0.44–0.57)*** 0.50 (0.44–0.57)
 30 days 52.3 Ref. Ref. Ref. Ref. Ref.
Current use of an e-cigarette other than JUUL
 Yes 41.7 0.79 (0.69–0.90)*** 0.97 (0.82–1.15) 0.97 (0.81–1.15) 0.97 (0.82–1.16) 0.98 (0.82–1.16)
 No 47.7 Ref. Ref. Ref. Ref. Ref.
Place of first JUUL SK purchase
 Retail store 55.1 1.81 (1.67–1.97)*** 1.37 (1.22–1.53)*** 1.39 (0.99–1.94) 1.38 (1.23–1.54)*** 1.54 (1.04–2.26)*
 JUUL website 40.3 Ref. Ref. Ref. Ref. Ref.
Bought JUUL SK “to help me quit smoking”
 Yes 47.4 1.08 (0.97–1.21) 1.34 (1.16–1.55)*** 1.35 (1.17–1.55)*** 1.36 (1.18–1.57)*** 1.36 (1.18–1.57)***
 No 45.5 Ref. Ref. Ref. Ref. Ref.
Primary JUULpod flavor used in past 30 days (at 3 months)
 Virginia Tobacco 41.2 Ref. Ref. Ref. Ref. Ref.
 Mint 53.9 1.67 (1.42–1.96)*** 1.37 (1.13–1.66)** 1.42 (1.11–1.81)** NI NI
 Mango 51.3 1.50 (1.29–1.76)*** 1.26 (1.05–1.52)* 1.27 (1.01–1.61)* NI NI
 Crème 42.5 1.06 (0.84–1.33) 1.13 (0.86–1.48) 1.16 (0.83–1.62) NI NI
 Fruit 38.6 0.90 (0.69–1.16) 0.94 (0.69–1.29) 0.96 (0.63–1.46) NI NI
 Cucumber 44.4 1.14(0.90–1.43) 0.88 (0.67–1.16) 0.85 (0.60–1.21) NI NI
 Classic Tobacco 22.5 0.41 (0.28–0.60)*** 0.54 (0.35–0.84)** 0.51 (0.30–0.86)* NI NI
 Menthol 38.9 0.91 (0.70–1.18) 0.90 (0.66–1.24) 1.12 (0.76–1.66) NI NI
 Equal use of 2+ flavors, no primary 43.5 1.10 (0.94–1.29) 0.99 (0.82–1.20) 0.93 (0.73–1.19) NI NI
JUULpod flavors used in the past 30 days (at 3 months)
 Only used JUUL tobacco flavorsc 37.0 Ref. NI NI Ref. Ref.
 Only used JUUL characterizing flavorsd 49.9 1.70 (1.45–1.98)*** NI NI 1.30 (1.07–1.57)** 1.33 (1.05–1.67)*
 Used flavors from both tobacco and categories 38.6 1.07 (0.89–1.28) NI NI 0.88 (0.71–1.09) 0.97 (0.74–1.27)
Interaction term: primary JUULpod flavor used in past 30 days (at 3 months)c Place of first JUUL SK purchase
 Virginia Tobaccoc Retail – – – Ref.   
 Mintc Retail – – – 0.92 (0.62–1.37) NI NI
 Mangoc Retail – – – 0.98 (0.67–1.44) NI NI
 Crèmec Retail – – – 0.93 (0.53–1.63) NI NI
 Fruitc Retail – – – 0.96 (0.52–1.80) NI NI
 Cucumberc Retail – – – 1.08 (0.61–1.89) NI NI
 Classic Tobaccoc Retail – – – 1.25 (0.47–3.35) NI NI
 Mentholc Retail – – – 0.55 (0.28–1.06) NI NI
 Equal use of 2+ flavors, no primaryc Retail – – – 1.14 (0.77–1.69) NI NI
Interaction term: JUULpod flavors used in the past 30 days (at 3 months)c place of first JUUL purchase
 Only JUUL tobacco flavorsc Retail – – – NI – Ref.
 Only JUUL characterizing flavorsc Retail – – – NI – 0.92 (0.61–1.37)
 Both flavor categories and tobaccoc Retail – – – NI – 0.77 (0.49–1.21)
  1. Model 1: N = 6968, χ2 = 836.329, df = 49, p < 0.001
  2. Model 2: N = 6979, χ2 = 823.798, df = 43, p < 0.001
  3. P30A past 30-day abstinence from smoking at the 3-month assessment, SK JUUL starter kit (JUUL vaporizer plus four disposable pods), 3 M 3-month assessment, aOR adjusted odds ratio, HS high school, CPD cigarettes smoked per day, PI Pacific Islander, NI not included in the logistic regression model
  4. Unadjusted ORs were estimated using only the relevant variable as the predictor variable
  5. ***p < 0.001; **p < 0.010; *p < 0.050
  6. aIncludes Asian Indian, Chinese, Filipino, Japanese, Korean, Vietnamese, Guamanian, Chamorro, and Samoan
  7. bIncludes Mexican, Cuban, Puerto Rican and “other Hispanic” ethnicity
  8. cJUUL tobacco flavors include “Virginia Tobacco” and “Classic Tobacco”
  9. dJUUL characterizing flavors include “Mint,” “Mango,” “Crème,” “Fruit,” “Cucumber,” and “Menthol”
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Harm Reduction Journal

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