Много чести (≥1/ 10), чести (≥1/ 100 до < 1/ 10), нечести (≥1/ 1 000 до < 1/ 100), редки (≥1/ 10 000 до < 1/ 1 000), много редки (< 1/ 10 000), с неизвестна честота (от наличните данни не може да бъде направена оценка).
Very common (≥ 1/ 10), common (≥ 1/ 100 to < 1/ 10), uncommon (≥ 1/ 1,000 to < 1/ 100), rare (≥ 1/ 10,000 and < 1/ 1,000), very rare (< 1/ 10,000), not known (cannot be estimated from the available data).