Data analysis

Our team discussed and designed the data extraction table based on the original RIGHT checklist and performed a preliminary study to improve and modify the table. We analysed the aspects of identification of recommendations, structure and content of recommendations, rationale and explanation of recommendations and other information in the included guidelines (box 1). All data were retrieved from the PDF or printer-friendly version of the guidelines. We calculated descriptive statistics, such as the total number of guidelines or recommendations where each aspect was used.

Identification of recommendations

Analyse how the core recommendations were indicated and highlighted:

Whether all recommendations are presented together in a summary section?

Whether recommendations are formatted in a particular or special way in the full text?

Whether a locating word for recommendations was used (ie, a search for this word can identify recommendations in the full text)?

Whether the strength of recommendations and quality of evidence were specifically indicated?

Structure and content of recommendations

Analyse how the recommendations were designed and written:

Whether recommendations were structured with essential and specific components?

Whether recommendations were worded with appropriate language?

Rationale and explanation of recommendations

Analyse how rationale and explanation of recommendations were reported and structured:

Whether recommendations were extended in more detail?

Whether the evidence supporting the recommendations was provided?

Whether the factors that influence recommendations were described?

Other information

Analyse how the reporting of recommendations should be assisted, including algorithm map and summary table of information on the usage, indication, adverse reactions and cost of the drugs.