Data from January 2018 to December 2021

We collected Monthly consultation data on asthma and common infectious diseases of the respiratory system in children aged one month to 14 years from January 2018 to December 2021 through the hospital inpatient and outpatient information system of the Second Central Hospital of Baoding City. The collection method was a logical search through the background of the system. The total number of outpatient and inpatient cases from January 2018 to December 2021 was 351,742, of which 156,356 cases were upper respiratory infections, 38,973 cases were bronchopneumonia, 143,715 cases were bronchiolitis cases, 5,063 cases were bronchiolitis, and 7,635 cases were asthma. The data on the monthly average concentration levels of PM2.5, PM10, SO2, NO2, CO, and O3 in Baoding City, Hebei Province, China, were collected through the "China Air Quality Online Monitoring Platform" during the same period.