Table 3

Estimates from separate logistic regression models of IQOS awareness, interest in trying and susceptibility to trying among youth in Canada, England and the USA

VariableAware of IQOS
(n=11 704)
Interested in trying IQOS
(n=11 396)
Susceptible to trying IQOS
(n=11 424)
aOR† (95% CI)
Age0.90** (0.84 to 0.96)0.98 (0.94 to 1.03)0.95* (0.91 to 0.99)
Sex
 FemaleRefRefRef
 Male1.35*** (1.16 to 1.57)1.21*** (1.10 to 1.32)1.21*** (1.10 to 1.32)
Country
 CanadaRefRefRef
 USA1.20* (1.01 to 1.44)1.00 (0.90 to 1.13)0.87* (0.78 to 0.97)
 England0.71** (0.59 to 0.87)1.03 (0.92 to 1.16)1.17** (1.05 to 1.30)
Smoking status
 Never smokerRefRefRef
 Experimental smoker1.85*** (1.53 to 2.25)3.86*** (3.43 to 4.34)4.39*** (3.89 to 4.96)
 Former smoker1.96** (1.23 to 3.14)4.02*** (2.81 to 5.75)2.47*** (1.72 to 3.56)
 Current smoker1.24 (0.96 to 1.59)23.96*** (18.79 to 30.56)52.68*** (35.84 to 77.44)
Vaping status
 Never vaperRefRefRef
 Experimental vaper1.96*** (1.63 to 2.35)2.75*** (2.46 to 3.06)3.28*** (2.93 to 3.67)
 Former vaper2.06* (1.10 to 3.85)2.18** (1.26 to 3.79)3.59*** (1.84 to 7.02)
 Current vaper2.32*** (1.61 to 3.33)3.71*** (2.49 to 5.53)3.91*** (2.49 to 6.12)
  • Analyses conducted using weighted data.

  • *P<0.05, **P<0.01, ***P<0.001

  • †ORs adjusted for age, sex, country, smoking status and vaping status.

  • aOR, adjusted ORs; Ref, reference category.