Retrospective Study
A retrospective study collects information on events that occurred before the clinical study starts (i.e., backward-looking).
A retrospective study collects information on events that occurred before the clinical study starts (i.e., backward-looking).
Support Provided by AbbVie, Amgen, AstraZeneca, Bristol Myers Squibb, Eisai, Genentech, Merck, and Sanofi.
