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FT-Transformer DeepSurv: A Novel Approach to Predicting Post-Discharge Mortality in Older Adults
Jae Yeon Chung1, Sung Hwan Ji1, Jun Sang Yoo1
1Department of Digital Health, SAIHST, Sungkyunkwan University, Seoul, Korea.
Studies in Health Technology and Informatics
|July 3, 2026
Abstract:
No validated tools exist to predict mortality at discharge for older ED patients (≥65), limiting Advance Directive (AD) engagement. Using 41,612 EHR records from Samsung Medical Center (2018-2022), our FT-Transformer DeepSurv model achieved a test C-Index of 0.8747 with the smallest generalization gap (0.015) among four compared models, identifying inflammation and comorbidity burden as dominant predictors over age. This explainable model supports safe discharge planning and proactive AD discussions for high-risk elderly patients.
Related Concept Videos
01:20Actuarial Approach
The actuarial approach, a statistical method originally developed for life insurance risk assessment, is widely used to calculate survival rates in clinical and population studies. This method accounts for participants lost to follow-up or those who die from causes unrelated to the study, ensuring a more accurate representation of survival probabilities.
Consider the example of a high-risk surgical procedure with significant early-stage mortality. A two-year clinical study is conducted,...
Consider the example of a high-risk surgical procedure with significant early-stage mortality. A two-year clinical study is conducted,...
01:21Energy Losses in Transformers
In an ideal transformer, it is assumed that there are no energy losses, and, hence, all the power at the primary winding is transferred to the secondary winding. However, in reality, the transformers always have some energy losses, and, hence, the output power obtained at the secondary winding is less than the input power at the primary winding due to energy losses.
There are four main reasons for energy losses in transformers.
The first cause can be the high resistance of the copper windings...
There are four main reasons for energy losses in transformers.
The first cause can be the high resistance of the copper windings...