Nonobserved and 7-day (7D) mortality missing data. This figure shows percentage alive, dead, and missing data for 7-day mortality per quarter. Black dotted line between quarters (Q) 1 and 2 in 2014 represents transition from paper form of Research Electronic Data Capture (REDCap) to electronic, whereas red dotted line between Q1 and Q2 in 2015 indicates the period when a research assistant dedicated to the collection of 7-day mortality data was hired.