Survival Analysis in Electronic Health Records Data
How do you apply time-to-event analysis to compare the impact of different prescriptions on death?
This article examines the survival function of two prescriptions using Kaplan-Meier and Cox models in an electronic health records (EHR) setting. EHR data are powerful real-world data. They are conducive to time-to-event analysis owing to the characteristic of sequential visits to primary and secondary care services. Take UK’s OpenSAFELY for instance, this secure, transparent, and open-source platform provides an Trusted Research Environment (TRE) for National Health Service (NHS) EHR data analysis, which supported urgent research into the COVID-19 emergency.
2024-03-23