Table 1

Awareness, experience and prevalence of IQOS among the Korean young adults and multivariable association of IQOS awareness and ever use

FactorCategoryn
(228)
Univariate association between IQOS awareness/ever use/current use and sociodemographic characteristic and smoking behaviourMultivariable association of IQOS awareness and ever use
IQOS awareness
(n=87)
IQOS ever use
(n=13)
Current IQOS use
(n=8)
IQOS awarenessIQOS ever use
n (%)P valuesn (%)P valuesn (%)P valuesOR (95% CI)OR (95% CI)
GenderFemale11446 (52.9)0.4959 (69.2)0.1536 (75.0)0.569RefRef
Male11441 (47.1)4 (30.8)2 (25.0)1.10 (0.59 to 2.05)3.11 (0.67 to 14.30)
Age (mean±SD)22822.31±1.430.27921.92±1.120.52621.50±0.930.0821.12 (0.89 to 1.40)0.80 (0.46 to 1.37)
Education levelHigh school12127 (31.0)0.4974 (30.8)0.7702 (25.0)0.850RefRef
2-year college degree3711 (12.6)3 (23.1)2 (25.0)0.70 (0.25 to 1.96)0.84 (0.10 to 6.78)
4-year college degree7049 (56.3)6 (46.2)4 (50.0)1.51 (0.71 to 3.20)1.22 (0.22 to 6.68)
Monthly allowance (KRW)None4914 (16.1)0.0761 (7.7)0.0280 (0.0)0.386RefRef
Less than 50 000 won3913 (14.9)1 (7.7)1 (12.5)1.65 (0.59 to 4.61)1.72 (0.06 to 50.87)
50 000–99 999 won5417 (19.5)3 (23.1)1 (12.5)1.28 (0.49 to 3.29)3.63 (0.23 to 57.01)
100 000–149 999 won4120 (23.0)1 (7.7)1 (12.5)1.59 (0.60 to 4.27)0.37 (0.02 to 9.47)
More than 150 000 won4523 (26.4)7 (53.8)5 (62.5)1.00 (0.36 to 2.80)1.95 (0.17 to 22.78)
Conventional cigarette smokingNever smoker15137 (42.5)0.0001 (7.7)0.0000 (0.0)0.188RefRef
Current smoker7750 (57.5)12 (92.3)8 (100.0)4.50** (2.19 to 9.25)11.65* (1.02 to 132.56)
E-cigarette useNever e-cigarette user19465 (71.3)0.0003 (23.1)0.0000 (0.0)0.012RefRef
Current e-cigarette user3425 (28.7)10 (76.9)8 (100.0)2.99* (1.11 to 8.07)9.65* (1.63 to 57.01)
  • KRW is South Korea’s currency, the won (1000 won=US$1).

  • *P<0.05; **P<0.0001.