Evaluating the level of evidence of qualitative research.

Guidelines for evaluating the levels of evidence based on quantitative research are well established. However, the same cannot be said for the evaluation of qualitative research. This article discusses a process members of an evidence-based clinical practice guideline development team with the Association of Women's Health, Obstetric and Neonatal Nurses used to create a scoring system to determine the strength of qualitative research evidence. A brief history of evidence-based clinical practice guideline development is provided, followed by discussion of the development of the Nursing Management of the Second Stage of Labor evidence-based clinical practice guideline. The development of the qualitative scoring system is explicated, and implications for nursing are proposed.