选择偏倚

但医院急诊人次有时也可能会受到入院率偏倚，选择偏倚等的影响。

However , Emergency room visits might be influenced by hospitalization bias and selection bias .

倾向得分通过平衡各组的协变量的方法，用于降低选择偏倚。

Propensity scores are used to reduce selection bias by equating groups based on these covariates .

研究人员承认研究也有一定局限性，包括可能的选择偏倚、种族误判和不准确的调查问卷等。

The researchers acknowledge study limitations , including possible selection bias , misclassification of race and inaccurate responses to questionnaires .

该发现是受选择偏倚和混杂设计的影响，这些可以通过倾向评分匹配最大限度的降低但不能消除。

The findings are subject to selection bias and confounding , which will have been minimised but not eliminated by propensity score matching .

赫克曼的主要贡献有选择偏倚和自我选择、持续模型、积极劳动力市场项目评价。

McFadden . Heckman 's major achievement is his theory on selection bias and self-selection , sustained model , item comment on active labor market ;

研究人员认为，这一较低的死亡率不是隆胸本身的结果，而是由于双重选择偏倚。

The researchers insist that this lower mortality rate is not the result of the breast augmentation procedure itself , but rather of a double selection bias .

结论在对医院资料进行统计分析时，应遵循观察性研究的原则和方法，以避免可能存在的信息偏倚、选择偏倚和混杂偏倚。

Conclusion The principles and methods for observational studies should be followed to reduce information bias , selection bias and confounding bias in statistical analysis of hospital data .

为了控制倒向因果和选择偏倚，研究者们利用省健康护理中心和处方数据库的资料，对1995年在马尼托巴出生的13116名孩子进行了研究。

To control for reerse causation and selection bias , the researchers studied a birth cohort of13116 children born in1995in manitoba , using the proince 's health care and prescription databases .

虽然我们能够观察到这种现象，但其应归咎于选择偏倚，因为接受表面置换的病人较传统全髋置换的病人更加年轻更活跃。

Although this is an observed phenomenon , there is most likely some selection bias , as patients who received the resurfacings tended to be younger and more active patient population .

为矫正患者选择的偏倚，任一一股中的患者生存时间都分别分析。

For adjustment for bias in patient selection , patient survival in either cohort was analyzed separately .

在数据的处理方面，提高了效率，减少了样本选择的偏倚，极大地方便了统计处理。

In the data processing , increased efficiency , reduced sample selection bias , and greatly facilitate the handling of statistics .

目的为避免选择和发表偏倚，系统评价者应采用多种查询技术，并尽力获得未发表的研究。

Primary objective To avoid selection and publication bias , systematic reviewers should employ a broad range of search techniques and make efforts to locate unpublished studies .

对非参数回归曲线提出了一种新的核估计量和窗宽选择方法及修正偏倚置信带。

This paper gives a new kernel estimate , bandwidth parameter and the bias-corrected confidence belt for nonparametric regression curve .