1.5 data analysis method
Choose the qualitative research integration method of the Australian Joanna Briggs Institute (JBI) Evidence-Based Health Care Center[8], that is, the pooled Meta integration. This method is mainly divided into four steps. One is to carefully read all the included documents in turn and repeat them several times; the other is to analyze the relevance of the original research results in the documents. On the basis of the results, it is fully interpreted; the third is to classify and summarize according to the identity of the research results to obtain new literature categories; the fourth is to summarize and integrate all the literature categories again, then obtain a new interpretation of the phenomenon, etc., to ensure the reliability, specificity, and summary of the results [9, 10].