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. 2007;2007:105–109.

Table 3:

Distribution of the number of classes and descriptions according to the number of modifications they underwent over time.

Mods Classes Descriptions
N N % N %
1 230,738 61.74% 869,736 83.40%
2 120,913 32.35% 158,488 15.20%
3 19,972 5.34% 12,871 1.23%
4 2,030 0.54% 1,728 0.17%
5 74 0.02% 43 0.00%
6 3 0.00% 3 0.00%
7 0 0.00% 2 0.00%
8 1 0.00% 0 0.00%
Total 373,731 100% 1,042,871 100%