Fig. 4From: Development and validation of the predictive risk of death model for adult patients admitted to intensive care units in Japan: an approach to improve the accuracy of healthcare quality measuresExponentially weighted moving average charts. Sequential admissions are presented on the x-axis. The red lines show the exponentially weighted moving average of mortality, with the starting point of the average mortality during the study period (i.e., 8.1%) and with a weight of 0.005 on the latest data. The light and dark green lines are the control limits representing two- and three-standard deviations, respectively. ICU, intensive care unit. Model 1 predicted in-hospital mortality with an offset variable for the linear predictor of the APACHE III-j model using a generalized linear model. Model 2 predicted in-hospital mortality with the linear predictor of the APACHE III-j model using a generalized linear model. Model 3 predicted in-hospital mortality with the linear predictor of the APACHE III-j model using a hierarchical generalized additive modelBack to article page