Meteorological factors, air pollution, and hospitalization rates of intestinal diseases

This study analyzed the correlation between intestinal diseases and air pollutants in Hebei Province and the influence of meteorological factors on the correlation. Cases with primary diagnosis of intestinal diseases were selected from the inpatient data of hospitals participating in medical insurance cost accounting for 5 consecutive years from January 1, 2018 to December 31, 2022 in 2 cities of Hebei Province. Pollution data from the real air network, include fine particulate matter (PM2.5), inhalable particle (PM10), SO2, NO2, CO, and O3_8h. Meteorological data from the National Meteorological Information Center, include temperature, humidity, and wind scale. Instrumental variable method and conditional Poisson distributed lag nonlinear model were used to analyze the association between air pollutant levels and the risk of hospitalization for intestinal diseases, and the effects of air pollutant and meteorological factors on intestinal diseases were analyzed by means of multiplication. A total of 77,258 patients hospitalized for intestinal diseases were included in the study. PM2.5, PM10, NO2, SO2, and CO were significantly associated with the risk of hospitalization for intestinal diseases. The effects of PM10, SO2, NO2, and CO on intestinal diseases were delayed. The association between the level of air pollutants and the risk of admission to hospital for intestinal diseases was different at different temperature and humidity. Stratified analyses found that young people and men were susceptible populations, there was an association between NO2 and the risk of hospitalization for noninfectious enteritis, and there was an association between PM2.5, PM10, NO2, and O3 and intestinal obstruction. There is a significant correlation between the level of air pollutants and intestinal diseases, and there is an interaction between meteorological factors and atmospheric pollution on intestinal diseases.