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Observational Study
. 2019 Mar 11;16(5):879.
doi: 10.3390/ijerph16050879.

Relative Risk Perceptions between Snus and Cigarettes in a Snus-Prevalent Society-An Observational Study over a 16 Year Period

Affiliations
Observational Study

Relative Risk Perceptions between Snus and Cigarettes in a Snus-Prevalent Society-An Observational Study over a 16 Year Period

Karl Erik Lund et al. Int J Environ Res Public Health. .

Abstract

Background: Most studies on perceived risks of smokeless tobacco products (SLT) have been conducted in the U.S., and the vast majority conclude that perceptions of the relative harmfulness of SLT versus cigarettes in the population are inconsistent with epidemiologically-based risk estimates, and typically conflated to that of cigarettes. We tested whether such inaccuracies also existed in Norway, where SLT-products are less toxic (Swedish snus) and SLT use is more prevalent than in the U.S. Methods: Over a 16 years period (2003⁻2018), 13,381 respondents (aged 16⁻79 years) answered questions about risk perceptions in Statistics Norway's nationally representative survey of tobacco behavior. We applied an indirect measure of comparative harm where risk beliefs for eight nicotine products were assessed independently of other products and then compared the answers. The wording of the question was: "We will now mention a variety of nicotine products and ask you how harmful you think daily use of these are. Use a scale from 1 to 7, where 1 is slightly harmful and 7 is very harmful". Mean scores with 95% confidence intervals were calculated. Results: The overall risk score for cigarettes was 6.48. The risk score for snus was 5.14⁻79.3% of the risk score of cigarettes. The relative risk scores for e-cigarettes (3.78) and NRT products (3.39) was 58.4% and 52.3% when compared to cigarettes. Perceptions of risk were stable over time. A strong association was observed between perceived risk of snus and having used snus in attempts to quit smoking. Conclusion: Perceptions of relative risk between snus and cigarettes is inconsistent with estimates from medical expert committees, which assess the overall health risk from use of Swedish snus to be minor when compared to the risk from smoking. Like the situation in the US, incorrect beliefs about SLT risks seem to be prevalent also in the snus-prevalent Norwegian setting. Accurate information on differential harms needs to be communicated. Future research should try to identify reasons why health authorities in the US and Scandinavia allow these well-documented misconceptions to persist.

Keywords: NRT; e-cigarettes; relative risk perception; risk perception; smokeless tobacco; snus; tobacco.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Unadjusted prevalence of daily smoking and daily use of snus among Norwegian adults ages 16–79 years, 2003–2018.
Figure 2
Figure 2
Perception of the harmfulness of eight nicotine products among Norwegian adults ages 16–79 years, 2003–2018. Unadjusted mean risk scores on a scale from 1 (slightly harmful) to 7 (very harmful).
Figure 3
Figure 3
Adjusted predicted probabilities of having used snus in the latest attempt to quit smoking at different levels of perceived risk of, among current smokers (n = 381) and former smokers (n = 310).

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