Много чести (≥ 1/ 10) Чести (≥ 1/ 100, < 1/ 10) Нечести (≥ 1/ 1 000, < 1/ 100) Редки (≥ 1/ 10 000, < 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 to < 1/ 1,000) Very rare (< 1/ 10,000) Frequency not known (cannot be estimated from the available data)