Department of Psychiatry & Human Behavior, Alpert Medical School of Brown University, Providence, RI, USA.
VA Center of Innovation in Long Term Services, Providence VA Medical Center, Providence, RI, USA.
Am J Alzheimers Dis Other Demen. 2023 Jan-Dec;38:15333175231199566. doi: 10.1177/15333175231199566.
Claims data are a valuable resource for studying Alzheimer's disease and related dementias (ADRD). Alzheimer's disease and related dementias is often identified using a list of claims codes and a fixed lookback period of 3 years of data. However, a 1-year lookback or an approach using all-available lookback data could be beneficial based on different research questions. Thus, the purpose of this study was to compare 1-year and all-available lookback approaches to ascertaining ADRD compared to the standard 3-year approach. Using a cohort of Veterans hospitalized for heart failure (N = 373, 897), our results suggested high agreement (93% or greater) between the lookback periods. The 1-year lookback period had lower sensitivity (60%) and underestimated the prevalence of ADRD. These results suggest that 1-year and all-available lookback periods are viable approaches when using claims data.
索赔数据是研究阿尔茨海默病和相关痴呆症（ADRD）的宝贵资源。阿尔茨海默病和相关痴呆症通常使用一系列索赔代码和固定的 3 年数据回溯期来确定。然而，根据不同的研究问题，1 年回溯期或使用所有可用回溯数据的方法可能会更有益。因此，本研究的目的是比较 1 年回溯期和所有可用回溯期方法与标准的 3 年方法相比，确定 ADRD。使用因心力衰竭住院的退伍军人队列（N=373897），我们的结果表明，回溯期之间具有高度一致性（93%或更高）。1 年回溯期的敏感性较低（60%），并且低估了 ADRD 的患病率。这些结果表明，在使用索赔数据时，1 年回溯期和所有可用回溯期都是可行的方法。
