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。
Methods to compare the principles and calculation methods of cumulative incidence rate, incidence density, and risk factors adjusted incidence density.
方法根据以往发表的文献及近年的科研成果资料，对游离二氧化硅累积接触量与尘肺累积发病率进行相关分析。
Methods Correlation of cumulative exposure to silica with cumulative incidence of pneumoconiosis was analyzed based on issued literatures and recent data about their scientific research.
在42个月的研究中，据研究者观察，包皮环切术组HIV感染累计发病率为2.6%，而对照组累积发病率为7.4%。
The cumulative incidence of HIV infection over 42 months among circumcised men was 2.6% as compared to 7.4% among controls, the researchers observed.
结论尘肺病发病率与累积接尘量有直接关系。
The morbidity of pneumoconiosis is closely related with the accumulated dust content.
结论尘肺病发病率与累积接尘量有直接关系。
The morbidity of pneumoconiosis is closely related with the accumulated dust content.
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