R. BreenELSEVIERInternational Encyclopedia of the Social & Behavioral Sciences
Official statistics are a fundamental source of publicly available information that periodically provides a great amount of data on all major areas of citizens' lives, such as economics, social development, education, and the environment. However, these extraordinary sources of information are often ...
Typically, instrument SNPs are selected from an exposure GWAS based on their summary statistics and the same summary statistics on the selected SNPs are used for subsequent analyses. However, this practice suffers from selection bias and can invalidate MR methods, as showcased via two popular ...
What is self-selection bias? Self-selection bias example How to avoid self-selection bias Other types of research bias Frequently asked questions What is self-selection bias? Self-selection biasrefers to the systematic, nonrandom difference in characteristics between individuals who choose to participat...
We use a propensity score in the hazard model to reduce the potential for finite-sample bias due to inverse weighting. When the number of subjects who... R Dawson,PW Lavori - 《Statistics in Medicine》 被引量: 58发表: 2002年 Propensity score and difference-in-difference methods: a study ...
Here, we test if long-term asexuality in oribatid mites resulted in signatures of reduced effectiveness of selection by comparing the accumulation of deleterious nonsynonymous mutations and changes in codon usage bias (CUB). We analyse nuclear and mitochondrial orthologous genes from newly generated ...
Wald assumed that the bullets were fired randomly, that no one could accurately aim for a particular part of the bomber. Instead they aimed in the general direction of the plane and sometimes got lucky. So, for example, if Wald saw that more bombers in his sample had bullet holes in the...
.bayesstats ic heckman noselBayesian information criteria DIC log(ML) log(BF) heckman10376.05 -5260.202 . nosel10435.29 -5283.025 -22.82221 Note: Marginal likelihood (ML) is computed using Laplace-Metropolis approximation. The value of the log-Bayes factor of -23 indicates a very strong preference...
Starting from a real data example in fluorescence, the problem of nonparametric estimation of a density in a biased data model is considered. Bias-correcti... FRT Comte - 《Journal of Statistical Planning & Inference》 被引量: 0发表: 2016年 Bandwidth selection for the presmoothed logrank test...
LIMDEP Version 8.0 Econometric Modeling Guide, Volume 2. Plainview, NY: Econometric Software. Greene, W. H. 2012. Econometric Analysis. 7th ed. Upper Saddle River, NJ: Prentice Hall. Heckman, J. 1979. Sample selection bias as a specification error.Econometrica47: 153–161....