biostudies-literatureUnknown12(9)Robinson EG<h4>Objectives</h4>To describe the distribution of costs based on potentially inappropriate prescribing (PIP) and adverse drug reaction (ADR) status in terms of total direct costs and costs caused by ADRs, among older adults.<h4>Design</h4>A retrospective cohort study was conducted among older adults, identified from a random sample of the general Swedish population. PIP was identified based on the Screening Tool of Older Persons' Prescriptions (STOPP) criteria and ADRs were identified using the Howard criteria. Causality between PIP and ADRs was evaluated using Hallas' criteria. Prevalence-based direct healthcare costs were calculated for the 3-month study period, including the total cost for healthcare and drugs, and the cost caused by ADRs.<h4>Setting</h4>All care levels, including primBMJ opene062589https://www.ebi.ac.uk/biostudies/studies/S-EPMC9511550biostudies-literatureHealthcare costs of adverse drug reactions and potentially inappropriate prescribing in older adults: a population-based study.PMC9511550Gyllensten HRobinson EGHedna KHakkarainen KMfalseHealthcare costs of adverse drug reactions and potentially inappropriate prescribing in older adults: a population-based study.<h4>Objectives</h4>To describe the distribution of costs based on potentially inappropriate prescribing (PIP) and adverse drug reaction (ADR) status in terms of total direct costs and costs caused by ADRs, among older adults.<h4>Design</h4>A retrospective cohort study was conducted among older adults, identified from a random sample of the general Swedish population. PIP was identified based on the Screening Tool of Older Persons' Prescriptions (STOPP) criteria and ADRs were identified using the Howard criteria. Causality between PIP and ADRs was evaluated using Hallas' criteria. Prevalence-based direct healthcare costs were calculated for the 3-month study period, including the total cost for healthcare and drugs, and the cost caused by ADRs.<h4>Setting</h4>All care levels, including prim2022-01-01T00:00:00Z2022 Sep2025-04-21T20:04:52.981Z2025-04-05T17:56:47.289ZS-EPMC95115503615303110.1136/bmjopen-2022-062589