In Reply We read the letter from Squitieri et al regarding the JAMA Surgery Practical Guide to Surgical Data Sets and checklist1 with great interest and appreciate their insight regarding data linking and secondary data analysis. Technological advancements supporting linkage across multiple data sets enhance our ability to use data that are generated through the natural use of modern health services.
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Jarman MP, Haider AH. When One Data Set Is Insufficient—Things to Consider When Linking Secondary Data—Reply. JAMA Surg. Published online December 05, 2018. doi:10.1001/jamasurg.2018.4751
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