A simulation based method for assessing the statistical significance of logistic regression models after common variable selection procedures.
A simulation based method for assessing the statistical significance of logistic regression models after common variable selection procedures.
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DOI:
10.1080/03610918.2016.1230216
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Elashoff DA
中科院分区:
文献类型:
--
作者:
Grogan TR;Elashoff DA
Classification models can demonstrate apparent prediction accuracy even when there is no underlying relationship between the predictors and the response. Variable selection procedures can lead to false positive variable selections and overestimation of true model performance. A simulation study was conducted using logistic regression with forward stepwise, best subsets, and LASSO variable selection methods with varying total sample sizes (20, 50, 100, 200) and numbers of random noise predictor variables (3, 5, 10, 15, 20, 50). Using our critical values can help reduce needless follow-up on variables having no true association with the outcome.
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