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Ventilatory lung function in young cigarette smokers: a study of susceptibility
M S Jaakkola1, J J Jaakkola, P Ernst
1Dept of Pulmonary Medicine, Helsinki University Central Hospital, Finland.
The European Respiratory Journal
|June 1, 1991
Summary
Cigarette smoking significantly reduces lung function (FEV1) in young adults. This effect is most pronounced in smokers who also experience wheezing, indicating a specific subgroup at higher risk.
Area of Science:
- Pulmonology
- Environmental Health
- Epidemiology
Background:
- Cigarette smoking is a major risk factor for reduced lung function.
- Identifying susceptible subgroups is crucial for targeted public health interventions.
Purpose of the Study:
- To assess the impact of smoking on ventilatory lung function in young adults.
- To identify specific subgroups more vulnerable to smoking-related lung damage.
Main Methods:
- Cross-sectional study of 1,044 adults aged 15-40.
- Linear regression analysis to evaluate the relationship between smoking (cigarette-years) and forced expiratory volume in one second (FEV1).
- Interaction terms were used to identify susceptible subgroups based on wheezing, gender, atopy, asthma, childhood respiratory illness, and environmental tobacco smoke exposure.
Main Results:
- A significant linear relationship was found between smoking quantity and reduced FEV1.
- Smokers had an average FEV1 35 ml lower per 100 cigarette-years compared to non-smokers.
- Wheezing significantly modified the effect of smoking; FEV1 was 68 ml lower per 100 cigarette-years in those with wheezing, eliminating the independent effect of smoking.
Conclusions:
- The detrimental effect of smoking on FEV1 in young adults appears concentrated in individuals who also experience wheezing.
- Wheezing in smokers is a strong indicator of increased risk for diminished ventilatory lung function.