样本量

样本量必须增大三倍。

The sample size would have to be quadrupled .

任意n阶抽样样本量的最优分配

Optimum Allocation for Sample Sizes in Random n-Stage Sampling

比较几种从血液中提取DNA方法所需要的时间、样本量、提取的DNA纯度、产量以及成本等。

Comparison of 5 kinds of methods for genomic DNA extraction by analyzing their time-costing , blood quantity , extracted DNA purity and cost .

相对率的非劣效性试验检验效能及样本量的模拟计算方法及SAS实现

Simulation method on power and sample size calculation in related rate non-inferior trial

与普通SVM法相比，该方法所需的样本量大大降低，而且可能达到更好的推广能力。

Comparing with the general SVM , it greatly reduces the number of samples , and probably reaches higher generalization ability .

散发性RP的发病机制尤为复杂，有待今后扩大样本量更进一步研究。

The pathogenesis of sporadic RP is particularly complex and needs further research .

然经统计学检验，P0.05，差异无显著性，这可能与样本量较小有关。

However , statistical test , P 0.05 , the difference was not statistically significant , which may be related with the sample size .

目的探讨ROC双正态样本量估计方法的准确性。

Objective Discuss the accuracy of sample size determination involving binormal ROC parameter estimation .

方法通过MonteCarlo方法对ROC双正态样本量估计法进行评价与修正。

Methods We conducted a Monte Carlo simulation study to evaluate and adjust the accuracy of the sample size determination .

初步研究未发现食管癌vEGFmRNA和蛋白表达与食管癌进展存在明显相关，但有必要扩大样本量进一步研究；

Our preliminary study shows that no significant correlation is found between the expression of VEGF protein , VEGF mRNA and prognosis of esophageal carcinoma .

草鱼种群SSR分析中样本量及标记数量对遗传多度的影响

Effects of Sample Size and Loci Number on Genetic Diversity in Wild Population of Grass Carp Revealed by SSR

诊断试验ROC参数估计双正态样本量估计方法探讨

Study of the Sample Size Determination for Diagnostic Accuracy Studies Involving Binormal ROC Parameter Estimation

方法根据资料特点和样本量大小，结合SPSS软件本身的一些特点，在SPSS中实现秩和检验的多重比较。

Methods According to the material characteristic and the sample quantity size , multiple comparisons are realized in SPSS by combining software itself some characteristics .

就目前测定的样本量而言，以Bayes判别适合于构建基于紫外光谱数据的判别模型。

According to the present analysis sample quantity , Bayes Discrimination is more suitable for building the discriminant model based on the ultraviolet spectrum data .

但是，由于本实验样本量小，所以与PCR反向点杂交法相比，准确性没有显著性差异。

However , due to the small sample size of this experiment , compared with PCR reverse dot blot hybridization method , the accuracy is of no significant difference in PCR fluorescence method .

由于样本量较小，Weibull分布的形状参数难以通过少数几次失效数据由客观方法估计得到。

For complex system with small samples , the shape parameter of Weibull is neither given by a few disable data nor estimated by impersonal method .

NSR用ABPM计算T/P比值的最小样本量需约60例。

The minimum sample size for calculating T / P ratio was 60 cases for N-SR.

一个FDA审查委员会将对临床实验结果进行审核，考查药物的实验样本量、安全性及有效性。

An FDA review committee will examine the clinical trial results , looking at the sample size of the trial and the safety and efficacy of the drug .

对这一结果可能很容易过度解读：样本量太小，而根据实验心理学家的要求上Facebook更新状态，这种做法有一些人为因素。

It would be easy to over-interpret these results : the sample is small and there is something artificial about posting updates to Facebook in response to the request of an experimental psychologist .

而当IPS样本量超过计划样本量的一半时，则应采用t检验法分析两个阶段的合并数据。

When the IPS sample size is bigger that 1 / 2 planning sample size , t test should be chosen to analyze the final data .

方法：在介绍Phillips法所依据的原理公式的基础上，利用统计软件SAS作实例探讨，并与传统的计算等效性检验样本量的公式相比较。

METHODS : According to the theory and formulation of Phillips method , examples were analyzed by SAS program and the results were compared with those by the traditional method .

这在将牙釉质EPR实验方法用于低剂量辐射流行病学的研究中，属于样本量较大的课题，也是是首次使用样本含量较大、直接测量的实验方法来验证归一化工作量方法。

The sample size included is large in low-dose radiation epidemiology research with EPR dosimetry . And this is the first time to validate NWM using experimental method with large sample size .

SOX方案对于晚期胃癌患者的一线治疗具有较好的临床应用价值，但本研究样本量较小，有待于大型的临床随机对照研究进一步加以验证。

SOX regimen was one of the good choice for the first-line treatment of advanced gastric cancer , and the large-scale randomized controlled clinical trials were needed for further verified .

利用微观仿真模拟软件对城市道路移动型样本量方案进行模拟，确定了满足ATMS系统需要的移动型检测器采用的最小样本量。

Micro-simulation software was used to simulate different sample-sizes , and thus to determine the smallest sample size of floating-vehicle detectors that meets the need of ATMS .

在研究者看来，拥有最高CCF指数的病人存活率反而有略微下降可能是由于研究样本量过小造成的。

According to the researchers , the slight drop in survival in people with the highest CCFs was likely due to the small sample size of the study .

但是由于该分布模型和正态分布、两参数Weibull分布等相比结构较复杂，需要待估的参数较多，尤其在样本量较小时的情形，其应用一直以来受到一定程度的限制。

However , compared with the normal distribution or the exponential distribution , three-parameter Weibull distribution has more complicated structure and more unknown parameters , which restrict its application so far when sample size is small .

结论：DTI对于鉴别不同起病形式的PD可能没有意义，不同起病形式PD患者的MMSE评分无显著性差异，有待扩大样本量进一步证实。

Conclusion : DTI to identify different onset forms of PD may not be meaningful , the MMSE scores of different onset forms of PD patients showed no significant difference , more samples are required in future studies .

根据置信度水平和功能单元覆盖要求计算BIT故障检测率、故障隔离率和虚警率综合验证的样本量，根据BIT参数的单侧置信限进行合格判断。

The sample sizes of the integrated demonstration for BIT fault detection rate , fault isolation rate and false alarm rate are computed according to the needs of confidence level and functional unites coverage . And the eligible judgments are made based on the single confidence limits of BIT parameters .

必须重视对卡方分析结果的解释，因为当试验只有很小的样本量或者数量极小时，通常情况下Meta分析具有较低的把握度。

Care must be taken in the interpretation of the chi-squared test , since it has low power in the ( common ) situation of a meta-analysis when trials have small sample size or are few in number .

此外，从实际问题的需要出发，本文还首先提出了截断2-SPRT方法（即在2-SPRT方案基础上设置最大样本量）并解决了该方法下参数的选择问题。

Additionally , a new method of truncated 2-SPRT is put up in this paper .