Fig. 3
![Fig. 3](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12872-018-0893-2/MediaObjects/12872_2018_893_Fig3_HTML.png)
Comparisons among different time points grouped by EuroSCORE. The blue curve represented low risk group (EuroSCORE II, < 2.00) and the red curve represented high-risk group (EuroSCORE II, > = 2.00), while the total population curve was in green