Sample of 654 youths, aged 3 to 19, in the area of East Boston during middle to late 1970's. Interest concerns the relationship between smoking and FEV. Since the study is necessarily observational, statistical adjustment via regression models clarifies the relationship.
data(fev)
A data frame with 654 observations on the following 5 variables.
age
a numeric vector
fev
a numeric vector
ht
a numeric vector
sex
a numeric vector
smoke
a numeric vector