1. Effect of Vitamin E on Exhaled Ethane in Cigarette Smokers
Habib Michael P. , MD, FCCP, Tank Laura J. , BS, Lane Lisa C. , BS, Garewal Harinder S. , MD 
CHEST 
Volume 115, Issue 3, Pages (March 1999)
DOI: /chest
Copyright © 1999 The American College of Chest Physicians Terms and Conditions

2. Figure 1
Effect of pack-years of smoking on exhaled ethane after placebo run-in (top, A), after vitamin E treatment (center, B), and at final visit (bottom, C). After supplementation with vitamin E (center, B), there was a statistically significant positive correlation between exhaled ethane and pack-years of smoking.
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Copyright © 1999 The American College of Chest Physicians Terms and Conditions

3. Figure 2
As expected, pack-years of smoking was inversely related to lung function as measured by the FEV1/FVC ratio.
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Copyright © 1999 The American College of Chest Physicians Terms and Conditions

4. Figure 3
Relationship between exhaled ethane and lung function as measured by FEV1/FVC ratio after placebo run-in period (top, A), after 3 weeks of vitamin E (center, B), and at final visit (bottom, C). There was a negative association between these two variables that was statistically significant after vitamin E supplementation (center, B). See text for discussion.
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Copyright © 1999 The American College of Chest Physicians Terms and Conditions

5. Figure 4
The relationship between vitamin E-induced changes in exhaled ethane and measurement of lung function was not statistically significant. See Discussion section for details.
CHEST  , DOI: ( /chest )
Copyright © 1999 The American College of Chest Physicians Terms and Conditions