重程度 颅脑损伤的严重程度是PTE最主要的危险因素。在发生癫痫的多种危险因素中,Herman[1]总结了各种危险因素发生癫痫的相对风险度(relative risk,RR),脑肿瘤发生癫痫的相对风险最高(RR=40),蛛网膜下腔出血(SAH)次之(RR=34)。重型颅脑损
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研究发现增加期服用阿斯匹林时间可以减少肿瘤中COX - 2阳性的风险(多元相对危险度0.59)，10年后越来越明显，研究人员说。
A reduction for the risk of COX-2-positive tumors was found with increasing duration of aspirin use (multivariate relative risk 0.59), becoming evident after 10 years, the researchers said.
使矿山的安全评价建立在合理风险理论的基础之上，其中相对险度指标可直接作为风险预警指标使用。
This makes the evaluation of mine safety to be established on a rational theoretical basis, in which the relative risk index could be adopted directly as the pre-warning index of mine risk.
新生儿评价组的标准方法，使用相对危险度(RR)，风险差(RD)和加权均数差(WMD)。
Standard methods of the Neonatal Review Group with use of relative risk (RR), risk difference (rd) and weighted mean difference (WMD).
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