Hyppigheden defineres som Meget almindelig (≥1/ 10), Almindelig (≥1/ 100 til, < 1/ 10), Ikke almindelig (≥1/ 1. 000 til, < 1/ 100).
Frequencies are defined as Very common (≥1/10), Common (≥1/100 to < 1/10) and Uncommon (≥1/1,000 to < 1/100).