What methodological limitations were present in the reviewed studies?
Methodological limitations were rated moderate overall. Four studies were rated moderate limitations: each 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 the review. Three studies were rated serious limitations due to a lack of reflection on the role of the researcher and data richness; plus limited context and reasoning for the choice of methods for one study, lack of information on context and data collection for another, and lack of rigour of research methods, study aims, and relevance of findings for the third study.