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. 2020 May 24;20:748. doi: 10.1186/s12889-020-08638-0

Table 4.

The relationship between the intention not to start smoking and other variables after exposure to graphic health warnings during the past 30 days among South Korean boys and girls

Variable Boys Girls
N (%)a AORb (95% CI) n (%)a AORb (95% CI)
Grade
 7th grade 3190 (93.2) 3.01 (2.52–3.58) 3393 (94.3) 2.42 (2.03–2.88)
 8th grade 3041 (87.1) 1.78 (1.56–2.04) 3358 (90.1) 1.58 (1.36–1.84)
 9th grade 2850 (83.6) 1.58 (1.37–1.82) 3334 (88.8) 1.49 (1.29–1.73)
 10th grade 2693 (77.2) 1.23 (1.09–1.40) 3180 (87.0) 1.43 (1.25–1.63)
 11th grade 2676 (71.5) 1.11 (1.00–1.24) 3147 (84.1) 1.26 (1.11–1.43)
 12th grade 2431 (67.3) 1.00 2985 (80.4) 1.00
Current smoking status
 Smoker 817 (32.1) 0.15 (0.13–0.16) 264 (33.6) 0.13 (0.11–0.16)
 Non-Smoker 16,064 (85.6) 1.00 19,133 (89.1) 1.00
e-cigarette status
 User 285 (32.5) 0.64 (0.53–0.78) 63 (29.4) 0.50 (0.32–0.78)
 Non-User 16,596 (81.2) 1.00 19,334 (87.7) 1.00
Expose to Secondhand Smoke
 Exposed 5073 (74.8) 0.85 (0.79–0.92) 6127 (84.7) 0.96 (0.88–1.05)
 Non-exposed 11,808 (81.1) 1.00 13,270 (88.2) 1.00
Tobacco Advertise
 Exposed 14,272 (79.5) 1.03 (0.92–1.15) 16,507 (87.6) 1.22 (1.10–1.35)
 Non-exposed 2609 (76.9) 1.00 2890 (83.9) 1.00
Anti-Tobacco Advertisement
 Exposed 14,701 (80.7) 1.34 (1.23–1.47) 17,710 (88.0) 1.55 (1.35–1.77)
 Non-exposed 2180 (70.2) 1.00 1687 (78.4) 1.00
Experience of smoking prevention education in school
 Yes 13,267 (81.0) 1.40 (1.28–1.53) 15,361 (88.0) 1.23 (1.12–1.36)
 No 3614 (73.2) 1.00 4036 (83.8) 1.00

AOR Adjusted odds ratio, CI Confidence interval

aWeighted percentages considering the complex sample survey design

bObtained from multinomial logistic regression analysis with control variables; Region, Family living structure, Perceived academic record, Perceived household economic status, Perceived stress, Depression experience, Current alcohol use