Objective To discuss and compare four methods for analyzing the seasonal fluctuation trend of mosquito. Methods The graphic method, cluster analysis, seasonal index, and run test were used to seasonally analyze the monitoring data of adult mosquitoes at national mosquito monitoring sites in Qingdao, China, 2017-2021, and the application effects of four methods were compared by descriptive analysis. WPS 2012 software was used to collate data, and the graphic method and seasonal index analysis. SPSS 23.0 software was used for cluster analysis and run test analysis. Results Graph method, cluster analysis, and seasonal index showed that the fluctuation trend of adult mosquitoes had seasonal characteristics, and the peak of seasonal fluctuation was concentrated in June to September. The run test showed that the fluctuation trend of adult mosquitoes had statistically significant seasonal characteristics (Z=-2.119, P=0.034). Conclusion The four methods can be used to analyze and determine the seasonal fluctuation trend of mosquito. The peak period of seasonal fluctuation can be obtained by the graphic method, cluster analysis, and seasonal index, and the statistical significance can be determined by the run test. Researchers can flexibly choose or combine various methods according to their research objectives and work needs.
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