add quickstart info

README.md

@@ -1,2 +1,12 @@
 # vancomycin-nephrotoxicity
-Study in eICU-CRD about vancomycin and associated nephrotoxicity
+
+Study in the eRI Research Database about broad spectrum antibiotic use and in particular any associated nephrotoxicity with vancomycin.
+
+## Quick start
+
+This uses a private database (the eRI Research Database) for the results. However, as a subset of this dataset has been made public (eICU-CRD), the study can be reproduced on the public subset (with a smaller sample size).
+
+1. Install eICU-CRD on a local PostgreSQL server.
+2. Run the SQL scripts in the `sql` folder to generate the necessary tables.
+3. Export these tables as CSVs to the `data` folder.
+4. Run [multiple-drug-analysis.ipynb](/multiple-drug-analysis.ipynb) to reproduce the results.