The impact of different imputation methods on estimates and model performance: an example using a risk prediction model for premature mortality
Mackenzie Hurst,
Meghan O’Neill,
Lief Pagalan
et al.
Abstract:Objective
To compare how different imputation methods affect the estimates and performance of a prediction model for premature mortality.
Study Design and Setting
Sex-specific Weibull accelerated failure time survival models were run on four separate datasets using complete case, mode, single and multiple imputation to impute missing values. Six performance measures were compared to access predictive accuracy (Nagelkerke R2, integrated brier score)… Show more
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