In the original publication of the article, the term "marginal change" in the Results section, Table 4, and supplementary fle should have read "estimated mean costs". The supplementary fle 2 has now been replaced with the correct fle. In the sentence beginning “Table 4 examines the fnancial impact…” in the subsection “Associations between polypharmacy prescribing and healthcare utilization” of the “Results” section, the term “marginal change” should have read “estimated mean costs”. The correct sentence should have been “Table 4 examines the fnancial impact of polypharmacy, noting an increase in expenditures across outpatient and ED settings. For outpatient costs, the unadjusted estimated mean costs was $294.2, which remained signifcant after adjustment with $73.07 in Model 1 and $70.9 in Model 2. ED visit costs similarly increased, with an unadjusted estimated mean costs of $258 and adjusted changes of $51.2 in Model 1 and $60.1 in Model 2.”