fev.RdDataset to examine if respiratory function in children was influenced by smoking.
fevA data frame with 654 observations on the following 5 variables.
AgeAge in years.
FEVForced expiratory volume in liters per second.
HtHeight in centimeters.
GenderGender.
SmokeSmoking status.
I. Tager and S. Weiss and B. Rosner and F. Speizer (1979). Effect of Parental Cigarette Smoking on the Pulmonary Function of Children. American Journal of Epidemiology. 110:15-26
data(fev)
summary(fev)
#>       Age              FEV              Ht         Gender    Smoke    
#>  Min.   : 3.000   Min.   :0.791   Min.   :117.0   Girl:318   No :589  
#>  1st Qu.: 8.000   1st Qu.:1.981   1st Qu.:145.0   Boy :336   Yes: 65  
#>  Median :10.000   Median :2.547   Median :156.0                       
#>  Mean   : 9.931   Mean   :2.637   Mean   :155.3                       
#>  3rd Qu.:12.000   3rd Qu.:3.119   3rd Qu.:166.0                       
#>  Max.   :19.000   Max.   :5.793   Max.   :188.0