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提出了一个从可获性方面优化的引力模型,其优化之处在于对医疗需求强度的表达,即将原始引力模型中对每个医院的医疗需求强度从人口势能改为所有居民地来该医院的就医人口数。该就医人口数由各居民地的社会人口学、经济学指标数据和医院信息,经过多元有序logit回归模型估算得到。通过考虑个人就医行为,新的需求强度指标能更贴切地反映对医疗服务的需求竞争,并从可获性方面改进医疗可达性的计算方法。
Proposed a gravity model optimized from the availability of the optimization lies in the expression of the intensity of medical demand, that is, the original gravity model for each hospital medical needs intensity from the population potential to all residents to come to the hospital The number of medical treatment population. The population of medical treatment is estimated from the socio-demographic, economic indicators and hospital information of each resident through the multivariate logit regression model. By considering individual medical practice, the new indicator of need intensity more closely reflects the demand for health care services and improves the calculation of accessibility from the perspective of availability.