When and how to use instrumental variables in palliative care research.
Penrod
Joan D
JD
Center for Research on Health Care Across Site and Systems of Care, John J. Peters VA Medical Center, Bronx, New York 10468, USA. joan.penrod@mssm.edu
Goldstein
Nathan E
NE
Deb
Partha
P
D015986:Confounding Factors, Epidemiologic; D003627:Data Interpretation, Statistical; D006801:Humans; D019370:Observation; D010166:Palliative Care; D012107:Research Design; D015983:Selection Bias