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. Author manuscript; available in PMC: 2023 Jan 1.
Published in final edited form as: Tob Control. 2021 May 31;32(1):42–50. doi: 10.1136/tobaccocontrol-2021-056479

Table 3.

Experimental effect, tobacco use status and interaction effect between experimental condition and past 30-day tobacco use status

Experimental effect, tobacco use status and Interaction effect between experimental condition and tobacco use status
Experimental condition main effect (ref.
control group)
 Past 30-day cigarette smoking (ref.
non-smoking)
 Past 30-day e-cigarette use (ref. non-e-
cigarette use)
 Experimental condition X past 30-day
cigarette smoking (ref. control group
and non-smoking)
 Experimental condition X past 30-day
e-cigarette use (ref. control group and
non-e-cigarette use
AOR 95% CI P value AOR 95% CI P value AOR 95% CI P value AOR 95% CI P value AOR 95% CI P value
HTP use intention
 No Reference Reference Reference Reference Reference
 Yes 0.90 0.72 to 1.13 0.375 4.97 2.91 to 8.49 0.000 3.35 2.40 to 4.68 0.000 0.78 0.36 to 1.76 0.550 1.67 1.02 to 2.68 0.046
Relative harm of HTPs versus cigarettes
 HTP more
harmful/
same/not
sure		 Reference Reference Reference Reference Reference
 HTP less
harmful		 1.94 1.38 to 2.72 0.000 1.41 0.66 to 3.02 0.380 1.91 1.10 to 3.28 0.020 0.56 0.19 to 1.70 0.302 0.73 0.36 to 1.50 0.396
Relative harm of HTPs versus e-cigarettes
 HTP more
harmful/
same/not
sure		 Reference Reference Reference Reference Reference
 HTP less
harmful		 1.14 0.65 to 2.01 0.640 0.30 0.04 to 2.31 0.246 1.96 0.85 to 4.56 0.117 2.67 0.20 to 15.21 0.455 0.69 0.21 to 2.30 0.544
Relative use of HTPs versus cigarettes
 Less likely
to use HTP/
same/not
sure		 Reference Reference Reference Reference Reference
 More likely
to use HTP		 1.26 0.97 to 1.63 0.083 0.25 0.09 to 0.73 0.011 1.49 0.95 to 2.32 0.079 1.61 0.42 to 6.18 0.489 1.05 0.58 to 1.90 0.875
Relative use of HTPs versus e-cigarettes
 Less likely
to use HTP/
same/not
sure		 Reference Reference Reference Reference Reference
 More likely
to use HTP		 1.26 0.83 to 1.92 0.285 0.66 0.15 to 2.97 0.592 0.72 0.29 to 1.78 0.478 2.15 0.29 to 15.76 0.450 0.61 0.16 to 2.26 0.457

The results are from five multivariable logistic regression models estimating the effects of experimental conditions, past 30-day cigarette smoking, past 30-day e-cigarette use, and two interaction terms on five postexposure HTP outcomes.

Bolded p values are statically significant (p<0.05).

AOR, adjusted OR; ; HTP, heated tobacco product.