Environmental factors differentially affect epistaxis among preschool and school-aged children

Introduction Environmental factors are closely associated with pediatric epistaxis. Whether this association differs according to age has not been previously reported. Therefore, we tried evaluate the differences in associations between environmental and epistaxis children of different ages. Methods A total 20,234 patients who visited hospital January 1, 2002, December 31, 2015, were enrolled study. The divided into two groups their ages: preschool-aged (<6 years) school-aged (6–18 years). Daily, monthly, yearly data on collected. We performed a stepwise logistic regression identify potential risk for each group. Results mean number cases per month both was highest September. lowest February November children. Temperature, humidity, maximum wind speed, sunshine duration Average particulate matter (>10 μm diameter), temperature, duration, sulfur dioxide concentration Conclusion This study indicates that patient’s age.