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Lung Cancer Survival by Smoking Status and Other Risk Factors

Lung Cancer Survival by Smoking Status and Other Risk Factors

 


A new study quantifies survival in lung cancer patients by smoking status and identifies other risk factors that may be associated with survival. This research National Cancer Institute Journal.

Researchers evaluated 6813 patients diagnosed with lung cancer between January 2010 and September 2019. Most patients were former smokers (54.2%) or current smokers (31.9%) rather than never smokers (13.9%).

Compared with current or former smokers, never-smokers were more likely to be female, Asian, and diagnosed with adenocarcinoma. Median follow-up was 36.2 months for never smokers, 40.2 months for former smokers, and 39.7 months for current smokers.


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The median time from diagnosis to death was 29.0 months for never smokers, 16.1 months for former smokers, and 13.0 months for current smokers. Unadjusted restricted mean survival was 32.1 months for never smokers, 25.9 months for former smokers, and 23.3 months for current smokers.

After adjusting for all factors, both ex-smokers and current smokers had decreased overall survival compared with never-smokers (-3.3 and -2.6 months, respectively). P. both <.001).

The researchers also assessed lung cancer-specific survival rates. The median time from lung cancer diagnosis to death was 43.3 months for never smokers, 21.7 months for former smokers, and 15.3 months for current smokers.

“Our findings show that although it is best not to smoke, as suggested by shorter survival times, quitting as soon as possible is still beneficial compared to current smoking.” write the researchers.

In a multivariate analysis of overall survival, factors significantly associated with decreased survival included higher stage, male sex, small cell histology, and higher comorbidities.

Factors significantly associated with improved overall survival included black race, younger age, adenocarcinoma and carcinoid histology, higher BMI, and receipt of initial systemic therapy, radiation, and/or surgery. increase.

“This study supports previous findings showing statistically significantly longer unadjusted and adjusted survival in never-smokers, as well as potentially implemented and observed non-tobacco-related risk factors.” We also found that,” the researchers concluded.

Disclosure: Some study authors have declared affiliations with biotechnology, pharmaceutical, and/or device companies. Please refer to the original reference for a complete list of disclosures.

reference

Carol NM, Barnett Hartman AN, Lendl KA and others Association between smoking status and patient-level factors and survival in lung cancer patients. J Natl Cancer Institute. Published online May 25, 2023. doi:10.1093/jnci/djad098

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