Table 1

Logistic regression results examining the effects of e-cigarette flavour bans and flavours used during a smoking cessation attempt on success quitting for 1 month or longer

N (%)Success quitting for 1 month or longer (vs quitting for less than 1 month)
OR (95% CI)AOR* (95% CI)
(1) Experienced e-cigarette flavour bans (vs no)259 (30.2)1.31 (0.98 to 1.76)1.18 (0.87 to 1.60)
(2) Restriction impact: switched flavours (vs finding another way to continue using restricted flavours)†93 (35.9)1.18 (0.71 to 1.96)1.52 (0.85 to 2.69)
(3) Used tobacco/menthol e-cigarette flavour when quitting‡ (vs no)168 (64.9)0.72 (0.43 to 1.20)0.65 (0.38 to 1.11)
(4) Used flavour other than tobacco/menthol when quitting‡ (vs no)235 (90.7)1.30 (0.56 to 3.02)1.07 (0.44 to 2.65)
(5) Preferred tobacco/menthol e-cigarette flavour when quitting‡ (vs other)84 (32.4)0.90 (0.54 to 1.52)0.94 (0.55 to 1.61)
  • CIs that do not include 1.00 indicate statistical significance, p<0.05. N (%) presents descriptive data among the entire sample (1) and among the subsample who experienced a flavour restriction (2–5).

  • *Adjusted for demographic covariates of age, sex, region, race/ethnicity, education, financial status. Results were consistent with or without tobacco history covariates (cigarettes per day, number of years smoked).

  • †Responses to flavour restrictions were coded as switching flavours (‘using the same device but only with available flavours’) versus finding another way to continue using restricted flavours (‘switching devices to continue using preferred flavours’, ‘buying elsewhere to obtain preferred flavours’, ‘making one’s own flavours’). N=5 who selected ‘other’ were not included in this analysis.

  • ‡Sensitivity analyses examined e-cigarette flavour coded as tobacco versus other and tobacco or menthol versus other, since menthol flavour is restricted in some locations, and results were consistent.

  • AOR, adjusted OR; CI, confidence interval; OR, odds ratio.