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Document type:
journal article 
Author(s):
Hapfelmeier, Alexander; Hothorn, Torsten; Riediger, Carina; Ulm, Kurt 
Title:
Estimation of a predictor's importance by random forests when there is missing data: risk prediction in liver surgery using laboratory data. 
Abstract:
Abstract In the last few decades, new developments in liver surgery have led to an expanded applicability and an improved safety. However, liver surgery is still associated with postoperative morbidity and mortality, especially in extended resections. We analyzed a large liver surgery database to investigate whether laboratory parameters like haemoglobin, leucocytes, bilirubin, haematocrit and lactate might be relevant preoperative predictors. It is not uncommon to observe missing values in such...    »
 
Journal title abbreviation:
Int J Biostat 
Year:
2014 
Journal volume:
10 
Journal issue:
Pages contribution:
165-83 
Language:
eng 
Print-ISSN:
2194-573X 
TUM Institution:
Institut für Medizinische Statistik und Epidemiologie