Group I | Group II | Group III | |
Pseudo-invasion | 18 (1% - 4%, 2.2%) | 3 (20% - 30%, 23%) | 0 |
True invasion | 8 (1% - 5%, 2.6%) | 1 (20%) | 2 (15% - 20%, 18%) |
Total | 26 | 4 | 2 |