Evaluating the case-positive, control test-negative study design for influenza vaccine effectiveness for the frailty bias.
AUTHORS
- NIHMSID: 8406899
ABSTRACT
Previous influenza vaccine effectiveness studies were criticized for their failure to control for frailty. This study was designed to see if the test-negative study design overcomes this bias.
Previous influenza vaccine effectiveness studies were criticized for their failure to control for frailty. This study was designed to see if the test-negative study design overcomes this bias.
Tags: Faculty Publications 2016