Uses of Ecologic Studies in the Assessment of Intended Treatment Effects

• 1 January 1999
• journal article
• Published by Elsevier in Journal of Clinical Epidemiology
• Vol. 52  (1) , 7-12
• https://doi.org/10.1016/s0895-4356(98)00136-x

Abstract

Keywords

• DISEASE SEVERITY
• ECOLOGIC STUDIES
• CONFOUNDING
• LEVEL OBSERVATIONAL
• OBSERVATIONAL STUDIES
• INDIVIDUAL LEVEL
• INTENDED TREATMENT