fev: FEV dataset

In rigr: Regression, Inference, and General Data Analysis Tools in R

FEV dataset

Description

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 rct-design.com (Teaching Materials, Datasets section).

Usage

fev

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")

Source

Dataset originally distributed at rct-design.com (Teaching Materials, Datasets section).

rigr documentation built on Sept. 2, 2025, 9:09 a.m.