What are the methodological limitations of studies related to heart failure?
The methodological limitations of studies related to heart failure were rated moderate overall. Five studies were rated moderate limitations: two studies due to lack of context and role of the researcher, plus data analysis in one study and data richness in the other. Another two studies due to lack in data richness, plus missing information on the topic guide in one, and lack of reflection on the role of the researcher and loose link between findings and conclusions in the other. The fifth study due to no reflections on role of researcher and lack of detail on methodology. One study had serious limitations due to the secondary use of data and the subsequent inability to assess their methodology in detail, along with vague description of the analysis.