Electronic Health Records (EHRs) contain sensitive patient information, which
presents privacy concerns when sharing such data. Synthetic data generation is
a promising solution to mitigate these risks, often relying on deep generative
models such as Generative Adversarial Networks (GANs). However, recent studies
have shown that diffusion models offer several advantages over GANs, such as
generation of more realistic synthetic data and stable training in generating
data modalities, including image, text, and sound. In this work, we investigate
the potential of diffusion models for generating realistic mixed-type tabular
EHRs, comparing TabDDPM model with existing methods on four datasets in terms
of data quality, utility, privacy, and augmentation. Our experiments
demonstrate that TabDDPM outperforms the state-of-the-art models across all
evaluation metrics, except for privacy, which confirms the trade-off between
privacy and utility.

使用扩散模型生成混合类型的电子病历在数据质量、效用和增强方面超过其他现有模型，但在隐私方面存在同质化风险。