Health and Quality of Life Outcomes · 2016 · 11 citations · 44 references
The 46-item COPD-SIB has good psychometric properties and content validity. Items are available in Dutch and English. The COPD-SIB can be used as a stand-alone instrument, or to inform computerised adaptive testing.
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R: A Language and Environment for Statistical Computing
R Core Team · 2000 · 352.8K citations · Full text
Richard A. Brown, Trevor Hastie, Robert Tibshirani · Biometrics · 1991 · 8.3K citations
Statistical Modeling, Statistics, Generalized Additive Models +1
David Cella, William T. Riley, Arthur A. Stone et al. · Journal of Clinical Epidemiology · 2010 · 4.9K citations · Full text
Trevor Hastie, Robert Tibshirani · Statistical Science · 1986 · 3.4K citations