# Methods

need brief description and IRB statement

## Population and Data

This study was designed using the Medical Information Mart for Intensive Care (MIMIC) database [@johnsonalistair]. MIMIC (Medical Information Mart for Intensive Care) is an extensive, freely-available database comprising de-identified health-related data from patients who were admitted to the critical care units of the Beth Israel Deaconess Medical Center. The study uses version IV of the database, containing data from 2008 - 2019. The database contains many different types of information, but only data from the patients and laboratory events table are used in this study.

## Data Variables and Outcomes
