| 研究実績の概要 |
Using cancer registry and doctor certificate records, we capture physician quality by matching comparable patients with advanced cancer by doctor, hospital, and admission period. Estimates show that physician-patients are less likely to use surgery or radiation, more likely to use targeted drug therapy, spend less on checkups, and enjoy higher long-term survival while paying less on coinsurance than nonphysician-patients. Restricting data to less informed physician-patients, we find that those with stronger professional ties receive less surgical/radiation therapy and have higher survival, though only for 0.5 years. We show that relational and informational advantages appear in healthcare agency problems. This paper is the first to evaluate the relative importance of the relational and informational influences in healthcare agency problems by relaxing this restriction. Crucial to our evaluation is a wide range of individually identifiable medical specialists who have attended about 0.3 million patients with advanced cancer, of whom 611 are physician-patients. Using Taiwan’s cancer registry, doctor personnel panel records, and universal health insurance administrative data, we have rich controls for both patients' and doctors' attributes. By looking within the matched physician-patients with different specialties attended by the same doctor, we aim to disentangle the relational advantage's impact due to stronger professional ties from the informational advantage's effect driven by being more informed.
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| 今後の研究の推進方策 |
Since we have found a collaborator who could implement the on-site data analysis for the project last year, finally we are gradually going back the normal pace. Additionally, we should find research assistants or contractors to speed up our progress for the data work off-site.
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