Analysis of water quality relationship with the incidence of gastrointestinal disease in Huai'an

Objective To discuss the relationship between water quality and gastrointestinal diseases, and variation of gastrointestinal diseases. Methods Data of water quality indicators and gastrointestinal cases in Huai\u0027an from January 2006 to December 2013 were collected. Correlation analysis was made and the NARX model was built, trained and simulated. Results Petroleum, phenol, total arsenic, total mercury, hexavalent chromium, fluoride and fecal coliform had a significant correlation with the gastrointestinal diseases. The coefficient of determination after the NARX neural network training was 0.716, and the fitting effect was perfect. Conclusion There was a certain correlation between water quality and gastrointestinal diseases. Fitting of water quality and gastrointestinal diseases based on nonlinear autoregressive neural network with external input was feasible.