Highlights: Abstract: Objectives: The purpose of this study is to evaluate the completeness of anesthesia recording before and after the introduction of an electronic anesthesia record.Methods: The study was conducted in a Korean teaching hospital where the EMR was implemented in October 2008. One hundred paper anesthesia records from July to September 2008 and 150 electronic anesthesia records during the same period in 2009 were randomly sampled. Thirty-four essential items were selected out of all the anesthesia items and grouped into automatically transferred items and manual entry items. 1, .5 and 0 points were given for each item of complete entry, incomplete entry and no entry respectively. The completeness of documentation was defined as the sum of the scores. The influencing factor….