Честотите се представят като много чести (≥1/ 10), чести (> 1/ 100, < 1/ 10), нечести (> 1/ 1 000, ≤1/ 100), редки (> 1/ 10 000, ≤1/ 1 000), и много редки (≤1/ 10 000).
Frequencies are reported as very common (≥ 1/ 10), common (> 1/ 100 ,< 1/10), uncommon (> 1/ 1,000, ≤ 1/ 100), rare (> 1/ 10,000, ≤ 1/ 1,000), and very rare (≤ 1/ 10,000).