Figure 7. Error rate for the random forest training set. On the x- and y-axis, one can observe the number Figure 7. Error rate for the random forest training set. On the x- and y-axis, one can observe the of trees and the error rate, respectively. The out-of-bag (OOB) score for the model is presented as a number of trees and the error rate, respectively. The out-of-bag (OOB) score for the model is presented black solid line; 0 and 1 represent the control and case groups, respectively. as a black solid line; 0 and 1 represent the control and case groups, respectively .