[Validation into Spanish of the revised Patients' Attitudes Towards Deprescribing (rPATD) questionnaire to assess patients' attitudes towards deprescribing. Research protocol].

Introduction And Objective: Polypharmacy has become a priority public health problem in developed countries. In response to its approach, deprescription stands out. Its success will depend largely on the attitudes and beliefs of patients towards the number of drugs they are taking and their willingness to initiate a process of deprescription. To explore these factors, researchers have developed the revised Patients' Attitudes Towards Deprescribing (rPATD) questionnaire, originally in English. The objective of this study is the validation into Spanish of rPATD questionnaire, both older adults and caregivers versions.

Material And Methods: A first qualitative validation phase and a second phase of analysis of its psychometric characteristics will be carried out through an observational descriptive study of validation of a measurement instrument. One hundred and twenty subjects (polymedicated older adults and caregivers) from three health centers will be selected by consecutive sampling. The questionnaire will be provided and clinical and sociodemographic data will be collected. Feasibility, reliability (through internal consistency and intraobserver reliability) and validity (apparent, construct and criterion) of the questionnaire will be evaluated.

Expected Results: It is expected to obtain a questionnaire that will serve as a tool for the clinician to identify patients with a favorable predisposition to deprescription and that will allow to contribute the patient's perspective to this process.

Conclusion: The use of the rPATD questionnaire, alone or integrated into other more complex interventions, may lead to an improvement in the quality of care for the polymedicated patients.