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Park, Chung, Jung, Kim, Kim, Jee, Chang, and Kim: The Difference of Lung Cancer Prevalence According to Smoking Habits
Original Article

Tuberculosis and Respiratory Diseases 2003; 55(3): 267-279.

Published online: 30 September 2003

DOI: https://doi.org/10.4046/trd.2003.55.3.267

The Difference of Lung Cancer Prevalence According to Smoking Habits

Moo Suk Park, M.D.1, Jae Ho Chung, M.D.1, Jae Hee Jung, M.D.1, Young Sam Kim, M.D.1, 2, Se Kyu Kim, M.D.1, 3, Sun Ha Jee, M.D.4, Joon Chang, M.D.1, 2, Sung Kyu Kim, M.D.1, 2

1Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.

2The Institute of Chest Diseases, Yonsei University College of Medicine, Seoul, Korea.

3Brain Korea 21 Project for Medical Sciences, Yonsei University College of Medicine, Seoul, Korea.

4The Graduate School of Public Health and Management, Yonsei University, Seoul, Korea.

Address for correspondence: Sung Kyu Kim, M.D. Department of Internal Medicine, Yonsei University College of Medicine CPO Box 8044, Seoul, Korea. Phone: 02-361-5420, Fax: 02-393-6884, skkimpul@yumc.yonsei.ac.kr

Copyright©2003. The Korean Academy of Tuberculosis and Respiratory Diseases. All rights reserved.

Abstract

Background

The purpose of this study was to analyze the smoking habits in patients with lung cancer and identify any difference of prevalence according to histologic types of lung cancer.

Methods

The data were calculated by total amounts of tar and nicotine inhaled during the whole lifetime according to variation of smoking habits. This study was to investigated any difference of prevalence in lung cancer according to smoking habits. The subjects comprised 150 lung cancer cases and 300 hospital control cases that were matched by age and sex. Smoking habits during the whole lifetime were surveyed by standardized questionnaire. Odds ratios were estimated by unconditional logistic regression analysis.

Results

There were 104 male and 34 female lung cancer cases. By histologic type, there were 53 cases of squamous cell carcinoma, 67 of adenocarcinoma and 30 of small cell lung carcinoma.
The differences between lung cancer cases and controls according to smoking habits were total duration of smoking, total pack years of smoking and number of cigarettes smoked per day during the previous two years.
The odds ratios were higher in Kreyberg I, but not in Kreyberg II, for the longer duration of smoking, the greater total pack years of cigarettes consumed, the more cigarettes smoked per day during the previous two years, the longer duration of non-filter smoking, the earlier life cases who began to smoke, and the higher amounts of calculated total tar and nicotine inhaled over the whole lifetime.
When we added grade of inhalation to calculation of amounts of tar and nicotine inhaled over the lifetime, the odds ratios of total inhalation amounts of tar and nicotine were as high as those the without them.

Conclusions

This study reconfirmed that smoking habits were strongly associated with lung cancer and that there were different associations between smoking habits and histologic types of lung cancer. In particular, calculations of total tar and nicotine amounts inhaled over the whole lifetime were calculated for the first time in trials from lung cancer epidemiologic studies.

Keywords: Smoking habits, Lung cancer

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