臺大公衛學院為加強宣導本院教師之學術成果，進而提升本院國際能見度，由董鈺琪老師撰寫以下列文章投稿至ASPPH Friday Letter.
External Validation of and Factors Associated with the Overuse Index: a Nationwide Population-Based Study from Taiwan
該文目前已刊登於 ASPPH Friday Letter, April 23, 2021
The Overuse Index (OI), previously called the Johns Hopkins Overuse Index, is developed and validated as a composite measure of systematic overuse/low-value care using United States claims data. However, no information is available concerning whether the external validation of the OI is sustained, especially for international application. Moreover, little is known about which supply and demand factors are associated with the OI.
We used nationwide population-based data from Taiwan to externally validate the OI and to examine the association of regional healthcare resources and socioeconomic factors with the OI.
Our study supported the external validation of the OI by demonstrating a similar association within a universal healthcare system, and it showed the association of a higher proportion of PCPs and a higher proportion of low-income people with less overuse/low-value care.