Table 3:

Results of node collapse to various levels.

Level	number of concept units	Case			Control
		Precision	Recall	F-Score	Precision	Recall	F-Score
1	30	0.665±0.000	0.708±0.002	0.686±0.001	0.688±0.001	0.643±0.001	0.665±0.001
2	218	0.688±0.001	0.665±0.001	0.676±0.001	0.675±0.001	0.699±0.002	0.687±0.001
3	1467	0.843±0.001	0.820±0.001	0.831±0.001	0.825±0.002	0.847±0.001	0.836±0.001
4	6582	0.955±0.001	0.936±0.001	0.945±0.001	0.937±0.001	0.956±0.001	0.946±0.001
5	13116	0.958±0.001	0.938±0.001	0.948±0.001	0.939±0.001	0.959±0.001	0.949±0.001
6	21180	0.968±0.001	0.940±0.001	0.954±0.001	0.942±0.000	0.969±0.001	0.955±0.001
7	27461	0.966±0.002	0.945±0.001	0.956±0.001	0.946±0.000	0.967±0.001	0.957±0.001
8	31307	0.967±0.001	0.945±0.001	0.956±0.001	0.946±0.001	0.968±0.001	0.957±0.000
9	32785	0.967±0.001	0.944±0.001	0.956±0.001	0.946±0.001	0.967±0.004	0.956±0.002
10	33084	0.970±0.001	0.939±0.000	0.954±0.000	0.941±0.000	0.971±0.001	0.956±0.000
11	32662	0.969±0.000	0.944±0.001	0.956±0.001	0.945±0.001	0.969±0.000	0.957±0.001
12	31953	0.969±0.001	0.943±0.001	0.956±0.001	0.945±0.001	0.970±0.001	0.957±0.001