Objective To improve care and outcomes for all migraine suffers, the USHC created these evidence-based guidelines for migraine headache. Methods Firstly, 5 relative Technical reviews were done according to the Methods used in the AHCPR Technical Reviews. Secondly, based on the results of the 5 technical reviews, the 4 treatment guidelines were developed in direction of the USHC’S Methods used in developing clinical guidelines. Results Evidence supporting the acute treatment and preventive treatment were exclusively Class 1 studies, evidence supporting the diagnostic testing were either Class 2 or Class 3 studies , only very few expert judgment was given on some compelling issues without evidence. The recommendations they supporting were high-qualified, middle-qualified, and poor-qualified respectively. Conclusion This Evidence-Based Guidelines is one of the first and most extensive cooperative projects available for creating guidelines. The guideline was developed with systematical and scientific methods and stroven to base all of its recommendations on evidence.
Evidence grading and recommendation strength assessment are key steps in the development of evidence-based guidelines, and have made significant progress in recent years. This article systematically reviews the development and evolution of evidence grading and recommendation strength in the past 30 years, and introduces the main representative standards. At the same time, a brief introduction is given to the guidelines and consensus evaluation results published in the field of neurological diseases in China, and future improvements are proposed. This article aims to help readers understand the development patterns of evidence grading and recommendation strength, in order to better understand the guidelines, and to develop more standardized guidelines.