抄録
The purpose of this research is to reveal the costs, mainly the labor costs on medical safety management, and to validate the invested costs and the effects for ensuring medical safety. The self-completed questionnaire method was conducted in the 1514 hospitals. In addition, we undertook the relationship analysis on the effects for ensuring medical safety by defining medical safe score and medical risk score based on the results of hospital accreditation. The result was 22,314yen on average (median 17,391 yen), that was converted to 1 bed per month. The result of the relationship analysis between the medical safe score and medical risk score, and the labor costs invested on medical safety, calculated based on the Spearman rank-correlation coefficient was statistically-significant. This research shows the more hospitals invest human resources on medical safety management, the higher the medical safety in those hospitals would be.