Data from a study of 654 children on the relationship between smoking status and lung function (measured by FEV). Each row corresponds to a single clinic visit and contains information on age, height, sex, FEV, and smoking status. More information, including a coding key, is available at http://www.emersonstatistics.com/datasets/fev.doc.
Format
A data frame with 654 rows and 7 variables:
- seqnbr
case number (the numbers 1 to 654)
- subjid
subject identification number (unique for each different child)
- age
subject age at time of measurement (years)
- fev
measured forced exhalation volume (liters per second)
- height
subject height at time of measurement (inches)
- sex
subject sex
- smoke
smoking habits ("yes" or "no")