Study design, precision, and validity in observational studies.
Carlson
Melissa D A
MD
National Palliative Care Research Center, New York, New York, USA. melissa.carlson@mssm.edu
Morrison
R Sean
RS
D015331:Cohort Studies; D003430:Cross-Sectional Studies; D006801:Humans; D019370:Observation; D010166:Palliative Care; D012107:Research Design; D054928:Validation Studies as Topic