Graduate Thesis Or Dissertation
 

Pulmonary function of male cigarette smokers compared with lifetime noncigarette smokers

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/bn999b152

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  • The pulmonary function scores of 250 male cigarette smokers were compared with 406 lifetime nonsmokers. A Stead-Wells spirometer was used to obtain forced vital capacity, forced expiratory flow, forced mid-expiratory flow, and forced expiratory volume. All individuals included in the sample were between. the ages of 20 and 49 years. Predictive regression equations were formulated for lifetime nonsmokers, light smokers, moderate smokers, heavy smokers, and for the combined group of smokers. The difference in physical characteristics between the lifetime nonsmokers and the smokers appeared slight, The primary difference between the lifetime nonsmokers and the smokers was the presence or absence cf a smoking history. The purpose of this research was to determine the effects of smoking history upon pulmonary functioning. The following conclusions were found: I. Male cigarette smokers have a significantly reduced pulmonary function when compared to lifetime nonsmokers. II. Heavy cigarette smokers have a significantly reduced pulmonary function when compared light smokers. III. Little difference is noted between pulmonary function of light smokers and moderate smokers. IV. Little difference is noted between pulmonary function of moderate smokers and heavy smokers. V. Smoking history correlates more highly with pulmonary function than does height. VI. Age correlates more highly with pulmonary function than does height, VII. Regression equations can be formulated to predict the pulmonary function of lifetime nonsmokers and the various classifications of smokers IX. Forced expiratory volume for one second correlates most highly with pack-years, X. The more a given individual smokes the more he inhales and the more deeply, XI. Pulmonary function standards for lifetime nonsmokers and smokers can be formulated from which an individual's pulmonary function score can be compared. XII. Cigarette smoking has been found to be a major contribution to reduced pulmonary function.
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