The challenge of selection bias and confounding in palliative care research.
Starks
Helene
H
Department of Bioethics and Humanities, School of Medicine, University of Washington, Seattle, WA 98195-7120, USA. tigiba@u.washington.edu
Diehr
Paula
P
Curtis
J Randall
JR
D000328:Adult; D000368:Aged; D015986:Confounding Factors, Epidemiologic; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010166:Palliative Care; D012107:Research Design; D015983:Selection Bias