Study on the influence of pre-hospital examination on average hospitalization days based on interrupted time series model
Yang Peng1, Pang Fan2, Zhao Qing2, Wang Yujin2, Zhao Jia2, Shang Lei1, Liu Ya2
1 Department of Statistics, School of Preventive Medicine, Air Force Medical University, Xi′an 710032, China;
2 Outpatient Department, Xijing Hospital, Air Force Medical University, Xi′an 710032, China
Abstract：Objective To evaluate the effect of pre-hospital examination on average hospitalization days. Methods The two most common diseases in otorhinolaryngology (adenoid hypertrophy, otitis media) and hematology (leukemia, lymphoma) were selected respectively, and the patient data of 144 months before and after 6 years of pre-hospital examination were extracted from the hospital electronic medical record database. The interrupted time-series method was used to analyze the change trend of the average hospitalization days before and after the pre-hospital examination application. Results After the application of pre-hospital examination, the average hospitalization days of adenoid hypertrophy, otitis media and lymphoma decreased by 1.7 days, 2.8 days and 2.6 days (P<0.05) respectively, whereas Leukemia decreased by 0.2 days (P>0.05). Adjusted by age, gender and admission condition, the slope of average hospitalization days declined significantly (P<0.05) for adenoid hypertrophy and otitis media, insignificantly (P=0.29) for lymphoma, and did not decrease but increased for leukemia after pre-hospital examination implemented for 1 month. Seventy-two months after the implementation of the examination, except for leukemia, the change slope of adenoid hypertrophy, otitis media, and lymphoma were all slightly higher than right after the implementation, but remained at an obvious lower level than before the implementation. Conclusion No matter for the short-term or long-term trend, pre-hospital examination application has a significant reduction in the average hospitalization days for diseases with better treatment effects (adenoid hypertrophy, otitis media, lymphoma), and has almost no reduction for the disease (leukemia) with longer hospitalization days and poor treatment effects.
杨鹏，庞凡，赵清，王昱锦，赵佳，尚磊，刘雅. 基于间断时间序列模型的院前检查对平均住院日影响的研究[J]. 中国医院统计, 2021, 28(1): 25-28.
Yang Peng, Pang Fan, Zhao Qing, Wang Yujin, Zhao Jia, Shang Lei, Liu Ya. Study on the influence of pre-hospital examination on average hospitalization days based on interrupted time series model. journal1, 2021, 28(1): 25-28.
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