SANRA-a scale for the quality assessment of narrative review articles.

SANRA's feasibility, inter-rater reliability, homogeneity of items, and internal consistency are sufficient for a scale of six items. Further field testing, particularly of validity, is desirable. We recommend rater training based on the "explanations and instructions" document provided with SANRA. In editorial decision-making, SANRA may complement journal-specific evaluation of manuscripts-pertaining to, e.g., audience, originality or difficulty-and may contribute to improving the standard of non-systematic reviews.