G*power软件的界面如图所示,它要求我们输入四个关键数值: 效应量(effect size):通常设置为0.15,表示中等水平。 显著水平(α):一般设定为0.05。 统计效力(power):通常认为0.8是大部分社科类研究可以接受的最低水平。 预测变量的数量(number of predictors):这需要根据实际的研究模型来确定。注意,这里指的是研究模型...
③选定先验计算样本量:Type ofpower analysis中选定A priori: Compute required sample size– given α, power, and effect size(如需计算显著性水平α和检验力β、显著性水平α、检验力β、效应量d时分别选择Compromise、Criterion、Post hoc、Sensitivity) ④输入给定参数:InputParameters中的Tail (s)(单双尾检验)...
Power (1-β) prob:0.95 Number of predictors:3 欲求样本数量,需要输入自变量的数量(Number of predictors),两类假设的决定系数也即多元全相关系数的平方(ρ2),需求的α与(1-β)的预设值。其中,ρ*2=Σ’YXΣ-1XΣYX/σ*2Y,若ρ*2未知,可以点击Determine=>按钮,输入各独立自变量与因变量的相关来求出...
Demiral M, Akça EE, Tekin I (2021) Predictors of global carbon dioxide emissions: Do stringent environmental policies matter? Environ Dev Sustain 23:18337–18361. https://doi.org/10.1007/s10668-021-01444-7 Article Google Scholar Di Cosmo V, Hyland M (2011) Carbon tax scenarios and the...
While exposure to green space, such as outdoor vegetation, has been linked with improved mental health outcomes in children, little is known about the impact of green space on children’s sleep. Sleep has many benefits, but the factors affecting both sleep and mental health as they relate to...
Pregnancy and multiple sclerosis (the PRIMS study): clinical predictors of post-partum relapse. Brain 2004; 127:1353-1360. 144 Gironi M, Martinelli V, Brambilla E, et al. Beta-endorphin concentrations in peripheral blood mononuclear cells of pa- tients with multiple sclerosis: effects of ...
Neurosyphilis may cause irreversible neurological sequelae. First-line treatment consists of penicillin G, with ceftriaxone being an alternative treatment in patients allergic to penicillin. The lack of clinical data comparing the efficacy of these two d
We performed two simulations to evaluate the bias in estimating the overall mixture effect and the accuracy to identify the true predictors. In the first simulation, we evaluated the performance of the three methods (AMC-based g-computation, quantile-based g-computation, and WQS) when the number...
between sexes. As well as such quantitative differences, intimate dimorphism are often qualitative reflecting differences in mechanisms that promote discomfort in gents and ladies. An important factor that influences the probability of pain perception is the threshold for activation of nociceptors. ...
RNA secondary structures in the 5′-untranslated regions (5′-UTR) of mRNAs are key to the post-transcriptional regulation of gene expression. While it is evident that non-canonical Hoogsteen-paired G-quadruplex (rG4) structures somehow contribute to the regulation of translation initiation, the ...