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Table 1 PICO-model of this systematic literature review’s research questions, inclusion and exclusion criteria

From: A review of the implementation and research strategies of advance care planning in nursing homes

Population NH patients and their relatives.
Intervention Advance Care Planning defined as a conversation between patients, and/or relatives and health personnel about thoughts, expectations and preferences for end-of-life-care.
Comparison All studies using standard care group comparison, before/after comparison, as well as studies without standard means of comparisons were included.
Outcome All outcomes both qualitative and quantitative were included.
Exclusion criteria Studies only including home-dwelling and hospital patients
Studies only including specific diagnoses (e.g., heart failure, cancer)
Studies only using chart based interventions where patients/relatives are left on their own (e.g., advance directives without conversations).
Studies that only focused on treatment limits (e.g., DNR, DNH). Publications such as case studies, chronicles, guidelines, protocols, unsystematic reviews and legal documents were excluded.
Publications in in other languages than English and Scandinavian.
Publications without abstracts.