[Introduction to qualitative evidence synthesis - Variants and application]. / Einführung in die qualitative Evidenzsynthese ­ Varianten und Anwendung.

Qualitative evidence syntheses (QES) are still uncommon in German rehabilitation research, although robust syntheses of qualitative evidence may lead to more strongly scientifically based decisions in health care. This article introduces the topic of qualitative evidence synthesis by describing three different synthesis methods - thematic synthesis, meta-ethnography, and grounded theory synthesis - and illustrating them with examples from rehabilitation research. This is followed by guidance on selecting the appropriate QES-method and reflections on the challenges of QES that are associated with the literature search and quality assessment of the studies to be included in the synthesis. Likewise considerations on quality criteria and their application are taken into account. GRADE-CERQual provides guidance for assessing confidence of findings from QES. Finally the value of QES for rehabilitation research is discussed.

Study protocol of a systematic review and qualitative evidence synthesis using two different approaches: Healthcare related needs and desires of older people with post-stroke aphasia.

INTRODUCTION: Stroke is a frequent disease in the older population of Western Europe with aphasia as a common consequence. Aphasia is known to impede targeting treatment to individual patients' needs and therefore may reduce treatment success. In Germany, the postacute care of patients who had stroke is provided by different healthcare institutions of different sectors (rehabilitation, nursing and primary care) with substantial difficulties to coordinate services. We will conduct two qualitative evidence syntheses (QESs) aiming at exploring distinct healthcare needs and desires of older people living with poststroke aphasia. We thereby hope to support the development of integrated care models based on needs of patients who are very restricted to communicate them. Since various methods of QESs exist, the aim of the study embedding the two QESs was to determine if findings differ according to the approach used. METHODS AND ANALYSIS: We will conduct two QESs by using metaethnography (ME) and thematic synthesis (ThS) independently to synthesise the findings of primary qualitative studies. The main differences between these two methods are the underlying epistemologies (idealism (ME) vs realism (ThS)) and the type of research question (emerging (ME) vs fixed (ThS)).We will search seven bibliographical databases. Inclusion criteria comprise: patients with poststroke aphasia, aged 65 years and older, studies in German/English, all types of qualitative studies concerning needs and desires related to healthcare or the healthcare system. The protocol was registered in the International Prospective Register of Systematic Reviews, follows Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols guidelines and includes three items from the Enhancing Transparency in Reporting the synthesis of Qualitative Research checklist. ETHICS AND DISSEMINATION: Ethical approval is not required. Findings will be published in a peer-reviewed journal and presented on national conferences.