Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7520382 | Journal of Clinical Epidemiology | 2016 | 11 Pages |
Abstract
The proportion of all previous patients is a potential IV for comparing COX-2 inhibitors vs. tNSAIDs in GePaRD. Our study demonstrates that valid instruments in one health care system may not be directly applicable to others.
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Authors
Bianca Kollhorst, Michal Abrahamowicz, Iris Pigeot,