| Sumario: | Background: Chronic conditions are a major source of morbidity, mortality and cost worldwide. Shared decision
making is one way to improve care for patients with chronic conditions. Although it has been widely studied, the effect of shared decision making in the context of chronic conditions is unknown.
Methods/Design: We will perform a systematic review with the objective of determining the effectiveness of
shared decision making interventions for persons diagnosed with chronic conditions. We will search the following databases for relevant articles: PubMed, Scopus, Ovid MEDLINE, Ovid EMBASE, Ovid EBM Reviews CENTRAL, CINAHL, and Ovid PsycInfo. We will also search clinical trial registries and contact experts in the field to identify additional studies. We will include randomized controlled trials studying shared decision making interventions in patients with chronic conditions who are facing an actual decision. Shared decision making interventions will be defined as any intervention aiming to facilitate or improve patient and/or clinician engagement in a decision making process. We will describe all studies and assess their quality. After adjusting for missing data, we will analyze the effect of shared
decision making interventions on outcomes in chronic conditions overall and stratified by condition. We will
evaluate outcomes according to an importance ranking informed by a variety of stakeholders. We will perform
several exploratory analyses including the effect of author contact on the estimates of effect.
Discussion: We anticipate that this systematic review may have some limitations such as heterogeneity and
imprecision; however, the results will contribute to improving the quality of care for individuals with chronic conditions and facilitate a process that allows decision making that is most consistent with their own values and preferences.
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