The cystfibr
data frame has 25 rows and 10 columns.
It contains lung function data for cystic fibrosis patients (7--23 years
old).
cystfibr
This data frame contains the following columns:
age
a numeric vector, age in years.
sex
a numeric vector code, 0: male, 1:female.
height
a numeric vector, height (cm).
weight
a numeric vector, weight (kg).
bmp
a numeric vector, body mass (% of normal).
fev1
a numeric vector, forced expiratory volume.
rv
a numeric vector, residual volume.
frc
a numeric vector, functional residual capacity.
tlc
a numeric vector, total lung capacity.
pemax
a numeric vector, maximum expiratory pressure.
O'Neill et al. (1983), The effects of chronic hyperinflation, nutritional status, and posture on respiratory muscle strength in cystic fibrosis, Am. Rev. Respir. Dis., 128:1051--1054.