The cystfibr data frame has 25 rows and 10 columns.
It contains lung function data for cystic fibrosis patients (7--23 years
old).
cystfibrThis data frame contains the following columns:
agea numeric vector, age in years.
sexa numeric vector code, 0: male, 1:female.
heighta numeric vector, height (cm).
weighta numeric vector, weight (kg).
bmpa numeric vector, body mass (% of normal).
fev1a numeric vector, forced expiratory volume.
rva numeric vector, residual volume.
frca numeric vector, functional residual capacity.
tlca numeric vector, total lung capacity.
pemaxa 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.