Changes in cigarette smoking behavior among breast cancer and unaffected women – A prospective study in the MARIE cohort. (December 2022)

• Record Type: Journal Article
• Authors: Gali, Kathleen; Bokemeyer, Frederike; Behrens, Sabine; Möhl, Annika; Obi, Nadia; Becher, Heiko; Chang-Claude, Jenny
• Is Part Of: Cancer epidemiology. Volume 81(2022)
• Publication Date: 2022-12
• Subjects: Smoking -- Tobacco -- Behavior change -- Breast cancer; Cancer -- Epidemiology -- Periodicals; Cancer -- Prevention -- Periodicals; Cancer -- Diagnosis -- Periodicals; Carcinogenesis -- Periodicals; 616.994005
• DOI: 10.1016/j.canep.2022.102282
• Languages: English
• ISSNs: 1877-7821

Abstract

Abstract: Background: Smoking cessation after a cancer diagnosis can reduce adverse cancer treatment outcomes. Whether a breast cancer diagnosis, a cancer commonly seen as unrelated to smoking cigarettes, motivates changes in smoking behavior is not fully understood. We aimed to compare long-term changes at three follow-up times of cigarette smoking behavior in women with breast cancer and baseline age- and region-matched unaffected women. Methods: We used longitudinal data from the population-based case-control study MARIE (Mamma Carcinoma Risk Factor Investigation). Women with breast cancer (N = 3813) and unaffected women (N = 7341) aged 50–74 years were recruited from 2002 to 2005. Analyses on changes in smoking were based on data from those who also completed follow-up 1 in 2009–2012, follow-up 2 in 2014–2016 and follow-up 3 in 2020. Multinomial logistic regression for changes (quitting, stable, or start smoking) adjusted for age, study region, education, comorbidities, living situation, and follow-up time, was applied to examine the associations between breast cancer status and changes in smoking behavior. Results: Women with breast cancer had significantly higher odds than unaffected women of quitting smoking (OR = 1.38, 95 % CI: 1.01–1.89) and lower odds of returning to smoking (OR = 0.29, 95 % CI: 0.09–0.94) at follow-up 1, but were more likely to start or return to smoking at follow-up 2 (OR = 2.11, 95 % CI 1.08–4.15). No significant group differences were found for changes in smoking behavior at follow-up 3. Conclusion: Our findings indicate that short-term changes in smoking behavior can be attributed to a breast cancer diagnosis, but that over time the effect diminishes and changes in smoking no longer differ between breast cancer and breast cancer-free women. To support smoking cessation and to prevent relapse, guidelines to address smoking in cancer care, as well as comprehensive tobacco treatment services, are needed. Highlights: We compared long-term changes in smoking between breast cancer and unaffected women. Quit rates at follow-up 1 were higher for women with breast cancer. At follow-up 2, women with breast cancer were more likely to start smoking again. There were no differences in changes in smoking behavior at follow-up 3.