Fig. 2From: Use of a modified early warning score system to reduce the rate of in-hospital cardiac arrestThe monthly in-hospital cardiac arrest (IHCA) incidence. The straight line in the middle is the mean, and the dashed lines at the top and bottom of the figure indicate ±1 standard deviation (SD). The incidence of IHCAs per 1000 admissions is significantly lower after introduction of the modified early warning score system than before introduction of the systemBack to article page