Table 1

Publication and general details of included studies

Data itemsAssociated questions
Authors and affiliationsWho conducted the research?
YearWhen was the study published?
TypeIn what type of literature was the study published?
Country/regionIn which geographical region(s) did the study take place?
Study designWhat was the study design?
Study aimsWhat were the study aims?
Study populationWhat population was studied? Were there any specific inclusion/exclusion criteria such as disease severity, duration or age?
Study sizeHow many people participated in the study?