Figures
Tables
Supplementary data
Files in this Data Supplement:
- Methods, results, discussion, table
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Methods:
Population selection
Distribution of never-and current-smokers and calculation of odds of smoking status
Development, derivation, and use of Harbor Δlung age formulas
Calculation of Morris and Thomas lung ages
Results:
Severity of obstruction
Changing in smoking odds with age
Lung age formula comparisons
Discussion:
Other possible limitations
TABLE 1E � NHANES-3 Population with acceptable spirometry - Figure 1E - Severity of airflow obstruction in NHANES-3 current-smokers by decade. Using GOLD categories there were 0.0% very severe, 0.8% severe, an additional 6.5% moderate, and an additional 10.4% mild.
- Figure 2E - Odds separating current- and never-smokers at age 25 and 55 years for %FEV1/FVC (upper) and % FEV1/FEV6 (lower). Semi-logarithmic plots are used because of the wide range of odds.
- Figure 3E - Mean spirometric population changes with aging and smoking. A: Never-smoking men at 25.2±2.9 years, current-smoking men at 74.3±2.7 years; B: Never-smoking women at 25.2±3.0 years, current-smoking women at 74.3±3.3 years; C: Relative %FEV1/FVC changes over 49 years considering each mean FVC as 100% are 17%/49 years which approximates 1% every 3 years; D: Relative %FEV1/FEV6 changes over 49 years considering each mean FEV6 as 100% are 12%/49 years which approximates 1% every 4 years.
- Methods, results, discussion, table
-