Table 2.

p-Values of the differences between the subgroups of the combined model.

Node	2	3	5	6
2	–	0.001∗	0.506	0.928
3	0.001∗	–	0.075	0.004∗
5	0.506	0.075	–	0.563
6	0.928	0.004∗	0.563	–

^∗p < 0.01.