Fig. 1

a-b Temporal trend of: a Mortality rate, and b Average length of stay (LOS) in the 6 subgroups. The subgroups were defined as each of the 3 disease groups of “bleeding,” “sepsis,” and “burn injury” in the 2 hospital groups of “HTD introducing GPC” and “HTD not introducing GPC.” P value was obtained by the Cochran-Armitage test in Fig. 1a and by Spearman’s rank correlation in Fig. 1b. FY, fiscal year (beginning on the April 1 and ending on March 31 of the next year); HTD, hospital transfusion department; GPC, good practice criteria of blood products; LOS, length of stay