Mortality

The "OffsetOfDeath" field denotes the elapsed time, in seconds, from admission to death, taking into account any subsequent hospital stays and out-of-hospital mortality data. The data was gathered from various sources, including government data. It is set to null if the death occurs more than one year after admission, since it is defined to 1-year mortality. For technical reasons observation time is only 6 month for some patients, field "EstimatedSurvivalObservationTime" holds information about that. However, it is worth noting that in some cases, if a patient dies in foreign countries, the information may be scarce. Postal address validity checks were performed, but no statistically significant differences were found, indicating that this may not be an issue of concern.