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. 2018 Nov 1;192:257–263. doi: 10.1016/j.drugalcdep.2018.08.016

Table 2.

Adjusted and unadjusted logistic regression analyses of the accurate perception that none or a very small amount of the harm from smoking comes from nicotine (vs. otherwise), N = 2,103.

None or a very small amount of the harm from smoking comes from nicotine (vs. otherwise)
Unadjusted
Adjusted2
%1 OR (95% CI) p OR (95% CI) p
Smoking status
Never (ref) 7.47 1.00 1.00
Tried 12.72 1.81 (1.10-2.97) .019 1.10 (0.60-2.02) .758
Ex-smoker 13.05 1.86 (0.77-4.49) .167 1.01 (0.33-3.07) .982
Sometimes 11.48 1.61 (0.70-3.69) .262 0.74 (0.30-1.81) .507
At least weekly 19.42 2.99 (1.58-5.66) .001 2.25 (0.87-5.83) .093



E-cigarette status
Never (ref) 7.56 1.00 1.00
Tried/use sometimes 16.78 2.47 (1.66-3.66) <.001 1.57 (0.92-2.68) .100
At least monthly 10.64 1.46 (0.49-4.29) .495 0.62 (0.18-2.18) .457



Gender
Male (ref) 10.07 1.00 1.00
Female 7.14 0.69 (0.49-0.96) .029 0.72 (0.51-1.02) .067



Age
11-13 (ref) 4.82 1.00 1.00
14-15 7.62 1.63 (1.00-2.65) .049 1.52 (0.92-2.48) .099
16-18 12.74 4.58 (3.50-6.00) <.001 2.60 (1.62-4.16) <.001



Region
London (ref) 5.95 1.00 1.00
North England 8.50 1.47 (0.81-2.66) .203 1.87 (1.02-3.43) .043
South England 8.27 1.43 (0.78-2.60) .246 1.62 (0.88-3.00) .121
Wales/Scotland 12.12 2.18 (1.14-4.16) .018 2.61 (1.35-5.03) .004



Social grade
ABC1 (ref) 8.92 1.00 1.00
C2DE 8.05 1.81 (1.10-2.97) .539 0.81 (0.57-1.17) .264



Family smoking
None (ref) 7.33 1.00 1.00
≥ 1 member 12.70 1.84 (1.30-2.61) .001 1.59 (1.05-2.42) .030



Family e-cigarette use
None (ref) 7.89 1.00 1.00
≥ 1 member 13.91 1.89 (1.23-2.90) .004 1.42 (0.87-2.33) .164



Number smoking friends
None (ref) 8.15 1.00 1.00
1 10.50 1.32 (0.83-2.12) .246 0.86 (0.05-1.49) .600
2 12.13 1.55 (0.80-3.03) .195 0.72 (0.34-1.53) .388
3 12.77 1.65 (0.74-3.69) .224 0.60 (0.19-1.86) .376
DK/Refused 7.25 0.88 (0.35-2.25) .791 1.04 (0.37-2.96) .938



Public approval of smoking
Approve (ref) 16.66 1.00 1.00
Disapprove 8.46 0.46 (0.24-0.87) .018 0.69 (0.33-1.46) .332
Neither 8.39 0.46 (0.22-0.96) .040 0.62 (0.27-1.44) .266
DK 5.70 0.30 (0.11-0.85) .024 1.42 (0.45-4.42) .548



Public approval of e-cigarettes
Disapprove (ref) 7.91 1.00 1.00
Approve 14.93 2.04 (1.31-3.19) .002 1.44 (0.89-2.33) .134
Neither 7.67 0.97 (0.65-1.43) .867 0.85 (0.56-1.30) .458
DK 3.77 0.46 (0.20-1.05) .065 0.40 (0.19-0.82) .013



Are e-cigarettes more or less harmful than smoking?
Otherwise (ref) 4.49 1.00 1.00
Less harmful 11.05 2.65 (1.69- 4.14) <.001 2.12 (1.32-3.41) .002
Constant 0.02 (0.01-0.07) .000

DK = Don’t Know. 1% are weighted, N are the same as in Table 1. 2Analyses are adjusted for all variables listed.