Table 3

Per cent of daily e-cigarette use among adult current users and prevalence ratio (PR) by demographics and e-cigarette characteristics, 2013–2014 PATH Study Wave 1 Survey

Respondent characteristicsDaily users*, % (95% CI)Unadjusted PR (95% CI)Adjusted PR (95% CI)
Sex
  Male22.0 (19.8 to 24.2)Ref.Ref.
  Female20.3 (17.5 to 23.1)0.92 (0.80 to 1.07) 0.83 (0.72 to 0.95)
Age (years)
  18–2414.9 (12.4 to 17.5)Ref.Ref.
  25–3420.6 (17.2 to 23.9) 1.38 (1.12 to 1.71) 1.02 (0.83 to 1.25)
  35–4420.2 (16.9 to 23.4) 1.35 (1.07 to 1.71) 1.07 (0.87 to 1.32)
  45–5423.3 (18.9 to 27.6) 1.56 (1.21 to 2.02) 1.18 (0.93 to 1.50)
  55–6427.6 (21.5 to 33.6) 1.85 (1.40 to 2.45) 1.44 (1.11 to 1.87)
  65+33.8 (25.0 to 42.7) 2.27 (1.65 to 3.12) 1.51 (1.13 to 2.01)
Race/ethnicity
  White, non-Hispanic23.6 (21.1 to 26.1)Ref.Ref.
  Black or African-American, non-Hispanic16.6 (11.7 to 21.5) 0.70 (0.51 to 0.97) 0.97 (0.75 to 1.25)
  Asian, non-Hispanic19.1 (8.2 to 29.9)0.81 (0.45 to 1.46)0.84 (0.52 to 1.36)
  American-Indian/Alaska Native, non-Hispanic0.81 (0.36 to 1.82)0.92 (0.44 to 1.90)
  Other or multirace, non-Hispanic20.4 (13.4 to 27.3)0.86 (0.61 to 1.22)0.94 (0.70 to 1.25)
  Hispanic13.1 (10.3 to 15.8) 0.55 (0.44 to 0.70) 0.79 (0.63 to 1.00)
Education
  Less than high-school diploma18.5 (14.6 to 22.4)0.88 (0.68 to 1.14)1.05 (0.82 to 1.35)
  GED20.6 (15.8 to 25.5)0.98 (0.77 to 1.26)0.93 (0.73 to 1.19)
  High-school diploma21.0 (17.2 to 24.7)Ref.Ref.
  Some college/associate degree22.6 (20.0 to 25.1)1.08 (0.88 to 1.32)1.00 (0.83 to 1.20)
  Bachelor’s degree or more20.7 (16.6 to 24.9)0.99 (0.76 to 1.28)0.89 (0.71 to 1.12)
Cigarette smoking status
  Current smoker15.1 (13.4 to 16.9)Ref.Ref.
  Recent quitter (≤1 year)67.6 (61.8 to 73.4) 4.47 (3.90 to 5.11) 3.21 (2.75 to 3.76)
  Long-term former smoker (>1 year)54.5 (46.2 to 62.7) 3.60 (3.01 to 4.30) 2.89 (2.41 to 3.46)
  Never-smoker11.3 (8.2 to 14.3) 0.74 (0.56 to 0.98) 0.81 (0.61 to 1.07)
Current use of other combusted tobacco products
  Yes13.7 (11.7 to 15.7) 0.53 (0.45 to 0.62) 0.68 (0.57 to 0.81)
  No26.0 (23.4 to 28.6)Ref.Ref.
Current use of non-combusted tobacco products
  Yes21.8 (19.7 to 23.9) 0.75 (0.57 to 1.00) 0.94 (0.72 to 1.22)
  No16.4 (12.0 to 20.8)Ref.Ref.
Rechargeable
  Yes26.9 (24.6 to 29.1) 4.09 (3.18 to 5.27) 1.95 (1.43 to 2.65)
  No6.6 (4.9 to 8.3)Ref.Ref.
Refillable
  Yes32.6 (29.8 to 35.5) 2.99 (2.52 to 3.56) 2.10 (1.75 to 2.52)
  No10.9 (9.1 to 12.7)Ref.Ref.
  • Unadjusted PRs were estimated using only the relevant variable as a predictor variable; adjusted PRs were estimated using all of the variables in the table as predictor variables. Boldface indicates statistically significant estimates (p<0.05).

  • *Respondents who responded currently using e-cigarettes ‘every day’ (versus on ‘some days’).

  • †Estimate was suppressed; the relative SE was >30%.

  • GED, General Education Development certificate; PATH, Population Assessment of Tobacco and Health.