Check this website to directly compare up to three local hospitals in 28 areas, for example “MRSA Infections.” Each measurement is explained clearly; for MRSA Infections:

Leapfrog uses a standardized infection ratio (SIR) calculated by the CDC’s National Healthcare Safety Network (NHSN) to compare the number of infections that actually happened at this hospital to the number of infections expected for this hospital, given various facility factors. A number lower than one means fewer infections than expected; a number more than one means more infections than expected.

http://www.leapfroggroup.org/compare-hospitals

Useful things to know before you head to an ER: what the terminology means, why you should bring a book or newspaper, prepare your exit plan because you may be there for hours, bring a wingman, and more: https://www.dailykos.com/stories/2019/1/13/1825769/-ER-Doc-411-Insider-tips-to-improve-your-visit-to-the-ER