We derive an explicit form for power/sample size calculation based on these two tests. A number of simulation studies have been used to illustrate the efficiency of the tests for the case-cohort design. An example is provided on how to use the formula. 展开 关键词:...
Power calculation for causal inference in social science: sample size and minimum detectable effect determination 来自 学术范 喜欢 0 阅读量: 81 作者: Eric W. Djimeu,Deo-Gracias Houndolo 摘要: This paper presents the statistical concepts used in power calculations for experimental design. It ...
Under each copula model, we derive a sample size formula based on the testing framework for rank-based tests and non-rank-based tests (i.e., logrank test and Kaplan-Meier statistic, respectively). We also investigate how the power or the sample size was affected by the choice of testing...
So in effect, I wish to perform a sample size calculation for aregression coefficient of two variables with unit standard deviation. Inthis case the standard error of the regression coefficient issqrt((1-(b*b))/(n-2)), so standard deviation of the regressioncoefficient is approximately sqrt(...
"Power Calculation for Causal Inference in Social Science: Sample Size and Minimum Detectable Effect Determination." Journal of Development Effectiveness 8 (4): 508-527.Djimeu, E and Houndolo, D, 2015. Power calculation for causal inference in social science: Sample size determination and minimum...
Power and sample size calculation for paired rightcensored data based on survival copula models 期刊名称: Communication in Statistics- Simulation and Computation 作者: Su, Pei-Fang,Chang, Sheng-Mao 年份: 2018年 关键词: Kaplan-Meier statistic;Logrank test;Survival copula;Weibull marginal 摘要:Sample...
SAS programming for sample size and power calculation of measurement data in non-inferior trials AIM:To calculate sample size and power of measurement data in non-inferior trials using SAS programming. METHODS:Two calculation method,formula and SAS pro... SM Wen,YF Chen - 《Chinese Journal of ...
The inversion principle and monotonicity property of the proposed formulations are used to describe alternative approaches to the exact interval estimation, power calculation, and sample size determination for correlation coefficients. 展开 关键词: multiple correlation partial-multiple correlation simple ...
point alternative, nor a point null and an alternative that covers all the remaining values. This is since such cases are non-existent in experimental practice[3][4]. The only two-sided calculation is for the equivalence alternative hypothesis, all other calculations areone-sided (one-tailed)....
Table 1 Effect size and sample size formulae Full size tableIn this paper the bootstrap has two roles. It is one of the four methods of sample size calculation and consequently analysis but it is also the method used to estimate the power curves presented in the figures. The bootstrap, ...