Respondent sequence number
Ever been told you have asthma
Shortness of breath on stairs/inclines
Short of breath walking on level surface
Ever told you had emphysema
Ever told you had chronic bronchitis
Ever told you had COPD, emphysema, ChB
Smoking
Age at Screening Adjudicated - Recode
AgeCat
Gender
Race/Ethnicity - Recode
Education Level - Adults 20+
Marital Status
Family PIR
Body Mass Index (kg/m**2)
BMICat
Age when first had asthma
Age when told you had emphysema