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The article ‘Do pneumonia readmissions flagged as potentially preventable by the 3M PPR software have more process of care problems?’ by Borzecki et al concluded that ‘PPR categorization did not reflect expected differences in quality of care’.1 Unfortunately, the design of the study was based on a misinterpretation of the meaning of the potentially preventable readmissions (PPR) categorisation as well as its intended use.
Following discharge of a patient with pneumonia, there are three possible outcomes: the patient is readmitted for a condition that is categorised as a PPR, for a condition that is categorised as a non-PPR or the patient is not readmitted. A readmission is categorised as a PPR if there was a reasonable expectation that it could have …
Competing interests We are the developers of the PPR methodology described in this article.
Provenance and peer review Not commissioned; internally peer reviewed.