重点强调流行病学，服务因素和评估程序。
Epidemiologic aspects, service elements and evaluative procedures are highlighted.
影响居民电能消费的直接因素主要有需求因素、经济因素和服务因素。
The direct factor that influences the resident electric power consumption mainly consists of requirement factor, economic factor and service factor.
社会经济因素对象人口学因素、行为因素和保健服务因素是影响项目地区孕产妇死亡的主要因素。
Social and economic factors, demographic traits of pregnant women, behavioral factors, MCH service are the main influencing factors of maternity death.
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