RESUMO
Objective To analyze factors affecting the expenses of inpatients and their comprehensive force of influence so as to check irrational increases of medical expenses. Methods Data on hospitalization expenses for disease entities ranking in the first ten places in a third tier hospital in 1997 were taken as samples and a statistical analysis was conducted of the medical expenses incurred in the discharged cases by means of the nerve network model. Results Major factors affecting hospitalization expenses were days of hospitalization, pre hospitalization conditions, pre operation length of stay and age, the comprehensive force of influence of which was respectively 0 4879 , 0 2124 , 0 1847 and 0 0612 . Conclusion To check the irrational increases of medical expenses, we must focus our efforts on the reduction of expenses for medicine and shorten days of hospitalization and pre operation length of stay.