What are the methodological limitations of the studies related to the Chronic Heart Failure Referral and approach to care NICE 2018?
Four studies were rated as moderate limitations due to a number of limitations that included some of the following; limitations in context, role of researcher, data analysis, research methods rigour, and/or data richness in some sections relevant to this review. One study was rated as serious limitations due to study aims, role of the researcher, rigour of research methods, data richness and relevance of findings. One study was rated very serious limitations due to the limited information on the background and reflection of the researcher, data collection, data richness, relevance of findings and link to conclusions.