- Hierarchy of evidence and appraisal of limitations (HEAL) grading systemP Cristian Gugiu
Quantitative Research, Evaluation, and Measurement Department of Educational Studies, The Ohio State University, Columbus, OH, United States Electronic address
Eval Program Plann 48:149-59. 2015..This article presents two methods--a grading system and a measure of methodological bias--for evaluating the quality of evidence produced by an efficacy study...
- An application of a new evidence grading system to research on the chronic care modelP Cristian Gugiu
The Ohio State University, 29 W Woodruff Ave, Columbus, OH 43210, USA
Eval Health Prof 36:3-43. 2013..Furthermore, the present study lends support to the proposed grading guideline although further research into its validity and reliability is needed...