Use of Registries and Large Databases for Toxicology Research.

The advancement of medical toxicology knowledge has traditionally relied on case reports and case series because of the ethical challenges involved in studying poisoned patients. The growing availability of several large databases and registries now allows researchers to describe and analyze patterns in poisoned patients who share a particular exposure, outcome, or condition. A large database or registry can be useful in generating hypotheses, supporting extramural funding applications, and planning more rigorous studies. Knowing how to access and interpret data in registries such as NPDS, NHAMCS, and HCUP is essential for all stakeholders engaged in medical toxicology research. This review describes the strengths and limitations of different toxicology-relevant registries and databases and how to leverage these powerful tools to advance the science in the field of medical toxicology.