To explore the key factors influencing the length of stay of pediatric pneumonia patients in a third-class hospital in Chongqing, so as to provide valuable information for effectively reducing the average length of stay and reasonably using of effective health resources.

The information of 4 150 pediatric pneumonia patients hospitalized in a third class hospital from January 2015 to December 2019 was collected for retrospective analysis. On the basis of single factor analysis, the multiple stepwise regression model was further used for multi-factor analysis to explore the possible factors affecting the length of stay of children with pneumonia.

There were 4 150 children with an average hospitalization day of 9.47 d, 1-9 d in 2 774 children with pneumonia, accounting for 66.84%; 1 098 children with 9-20 d, accounting for 26.46%; and 281 children with more than 20 d, accounting for 6.77%. According to the multiple stepwise regression equation, there were statistical significances (P<0.05) in the effects of special level nursing comorbidity, rescue, treatment results, second level nursing, first level nursing, medical insurance type, admission mode and age on the number of days in hospital.

Strengthening the control of factors affecting the length of stay of children with pneumonia can effectively reduce the average length of stay, which can bebeneficial to reduce the burden of society and families of children with pneumonia.