Table 1.

Scientific rationale of recommendations.

RMN specific recommendations			General (non-RMN specific) considerations
Definition	Consensus statement	Symbol	Definition	Consensus statement	Symbol
Scientific evidence and/or consensus that recommendation is beneficial and effective. Requires at least 1 randomized trial, or strong observational evidence, or strong (≥80%) agreement between the expert panel members.	Recommended/indicated		Consensus between authors that the consideration is beneficial and effective. The consideration is used by the majority of expert panel members (≥ 50%).	Used by a majority
General agreement and/or scientific evidence that favors usefulness/efficacy of the recommendation. Supported by limited observational or randomized studies with smaller inclusion numbers and/or moderate agreement between expert panel members (50–80%).	May be used/may be recommended		No general agreement between authors that consideration is beneficial and effective. The consideration is used by a minority of expert panel members (<50%).	Used by a minority
Scientific evidence that recommendation is not clearly beneficial and effective, or only used by a minority or great controversy between expert panel members (poor agreement <50%).	Used by a minority