发病密度（incidence density） ：适用于队列人口不稳定，研究对象进出队列的时间不一致的情况，是以观察到的人时为分母，以一定随访期内观察到的新发病例数为分...
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incidence density ID 发病密度
incidence density ratio 记录发病密度比
interval incidence density 区间发病率
interval incidence density detail 区间发病率
incidence radiant flux density 入射辐射通量密度
OBJECTIVE To discuss the calculation and epidemiological significance for risk factors adjusted incidence density of nosocomial infection.
目的探讨危险因素调整的医院感染发病密度的计算方法及意义。
Methods to compare the principles and calculation methods of cumulative incidence rate, incidence density, and risk factors adjusted incidence density.
方法比较医院感染累积发病率、发病密度和危险因素调整的发病密度的计算原理。
The correlation coefficients of rat density, deratization rates and the incidence of rat transmissible diseases were calculated.
同时，分别以鼠密度、灭鼠率的变化与鼠传疾病发病率进行相关系数分析。
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