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BMJ:新型风险模型用以预测糖尿病患者失明和截肢的风险

2015-11-13 MedSci MedSci原创

BMJ:新型风险模型用以预测糖尿病患者失明和截肢的风险是否能够设计一种风险预测模型用以评估25-48岁2型糖尿病患者失明和下肢截除的10年风险?

是否能够设计一种风险预测模型用以评估25-48岁2型糖尿病患者失明和下肢截除的10年风险?

采用前瞻性队列研究分析方法,分析了1998-2014年来自CPRD数据库的资料。共纳入了763项 QResearch实践(共 454 575名糖尿病患者),254项已经验证过QResearch实践(n = 142 419)以及357项CPRD实践(n = 206 050)。使用Cox比例风险模型分别评估男性和女性失明和截肢的10年风险。计算两队列的区分度和校准度。

研发用以定量预测男性及女性糖尿病患者失眠和截肢绝对风险的预测方程,并进行外部验证。随访期间,QResearch队列中新出现4822例下肢截肢病例和8063例失明病例。两个已验证队列中风险方程均进行了很好的校准。CPRD队列中男性截肢(D statistic 1.40, Harrell’s C statistic 0.73)和失明 (D statistic 1.40, Harrell’s C statistic 0.73)的区分度较好,与QResearch队列中女性的区分度结果相似。该算法是基于患者很可能知道或已常规记录于常规实践计算机系统来计算的。他们可用于识别高风险的患者,以防止失明和截肢的发生或对此行进一步的评估。该算法的局限性包括缺乏正式的裁定结果,信息偏倚以及数据丢失。

糖尿病可增加患者失明和截肢的风险,但一般没有用于准确评估患者个体失明和截肢风险的方法。本研究中新的算法计算出糖尿病患者的10年失明和截肢发生的绝对风险,并考虑到患者的个体危险因素。

原始出处:


Julia Hippisley-Cox,Carol Coupland. Development and validation of risk prediction equations to estimate future risk of blindness and lower limb amputation in patients with diabetes: cohort study. BMJ 2015; 351 doi: http://dx.doi.org/10.1136/bmj.h5441 (Published 11 November 2015)

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    2015-11-24 gaoxiaoe
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