RT Journal Article T1 How to Improve Healthcare for Patients with Multimorbidity and Polypharmacy in Primary Care: A Pragmatic Cluster-Randomized Clinical Trial of the MULTIPAP Intervention. A1 Del Cura-González, Isabel A1 López-Rodríguez, Juan A A1 Leiva-Fernández, Francisca A1 Gimeno-Miguel, Antonio A1 Poblador-Plou, Beatriz A1 López-Verde, Fernando A1 Lozano-Hernández, Cristina A1 Pico-Soler, Victoria A1 Bujalance-Zafra, Mª Josefa A1 Gimeno-Feliu, Luis A A1 Aza-Pascual-Salcedo, Mercedes A1 Rogero-Blanco, Marisa A1 González-Rubio, Francisca A1 García-de-Blas, Francisca A1 Polentinos-Castro, Elena A1 Sanz-Cuesta, Teresa A1 Castillo-Jimena, Marcos A1 Alonso-García, Marcos A1 Calderón-Larrañaga, Amaia A1 Valderas, José M A1 Marengoni, Alessandra A1 Muth, Christiane A1 Prados-Torres, Juan Daniel A1 Prados-Torres, Alexandra A1 Multi-Pap Group, K1 Ariadne principles K1 multimorbidity K1 polypharmacy AB (1) Purpose: To investigate a complex MULTIPAP intervention that implements the Ariadne principles in a primary care population of young-elderly patients with multimorbidity and polypharmacy and to evaluate its effectiveness for improving the appropriateness of prescriptions. (2) Methods: A pragmatic cluster-randomized clinical trial was conducted involving 38 family practices in Spain. Patients aged 65-74 years with multimorbidity and polypharmacy were recruited. Family physicians (FPs) were randomly allocated to continue usual care or to provide the MULTIPAP intervention based on the Ariadne principles with two components: FP training (eMULTIPAP) and FP patient interviews. The primary outcome was the appropriateness of prescribing, measured as the between-group difference in the mean Medication Appropriateness Index (MAI) score change from the baseline to the 6-month follow-up. The secondary outcomes were quality of life (EQ-5D-5 L), patient perceptions of shared decision making (collaboRATE), use of health services, treatment adherence, and incidence of drug adverse events (all at 1 year), using multi-level regression models, with FP as a random effect. (3) Results: We recruited 117 FPs and 593 of their patients. In the intention-to-treat analysis, the between-group difference for the mean MAI score change after a 6-month follow-up was -2.42 (95% CI from -4.27 to -0.59) and, between baseline and a 12-month follow-up was -3.40 (95% CI from -5.45 to -1.34). There were no significant differences in any other secondary outcomes. (4) Conclusions: The MULTIPAP intervention improved medication appropriateness sustainably over the follow-up time. The small magnitude of the effect, however, advises caution in the interpretation of the results given the paucity of evidence for the clinical benefit of the observed change in the MAI. Trial registration: Clinicaltrials.gov NCT02866799. SN 2075-4426 YR 2022 FD 2022-05-06 LK http://hdl.handle.net/10668/21380 UL http://hdl.handle.net/10668/21380 LA en DS RISalud RD Apr 12, 2025