A comparison of the efficacy and safety of complementary and alternative therapies for gastroesophageal reflux disease: A protocol for network meta-analysis

BACKGROUND: Gastroesophageal reflux disease (GERD) is one of the most common gastrointestinal diseases in the world and is showing increasing prevalence in some countries. The disease has a chronic course that leads to a significant decline in the quality of life of patients and is associated with a high economic burden worldwide. And complementary and alternative medicine is used to treat the disease. Over the past few decades, a number of randomized controlled trials and systematic evaluations have been conducted to evaluate the effectiveness and safety of different types of complementary and alternative medicine methods, so there is an urgent need to summarize and further evaluate these studies. METHODS: We will search the following sources without restrictions for date, language, or publication status: PubMed, Cochrane Central Register of Controlled Trials (CENTRAL) Cochrane Library, and EMBASE, China National Knowledge Infrastructure, Chinese Bio-medicine Database, VIP Chinese Periodical Database, Wan Fang Database. We will apply a combination of Medical Subject Heading and free-text terms incorporating database-specific controlled vocabularies and text words to implement search strategies. We will also search the ongoing trials registered in the World Health Organization's International Clinical Trials Registry Platform. Besides, the previous relevant reviews conducted on complementary and alternative therapies for GERD and reference lists of included studies will also be searched. RESULTS: This study will provide a reliable basis for the treatment of GERD with complementary and alternative therapies. CONCLUSIONS: The findings will be an available reference to evaluate the efficacy and safety of complementary and alternative therapies on GERD and may provide decision-making reference on which method to choose for clinicians. PROSPERO REGISTRATION NUMBER: PROSPERO CRD42020169332.