The phrase "are highly frequent" is correct and usable in written English.
It can be used to describe something that occurs often or is common in a particular context.
Example: "In this study, we found that certain errors are highly frequent among new learners."
Alternatives: "occur very often" or "are quite common."
Job stress and burnout are highly frequent in healthcare professionals, and prevalence in nurses can be as high as 40%.
Yu M, Shi Y, Zhang F, Zhou Y, Yang Y, Wei X et al. Sequence variations of mitochondrial DNA D-loop region are highly frequent events in familial breast cancer.
Large V, Hellstrom L, Reynisdottir S, Lonnqvist F, Eriksson P, Lannfelt L, Arner P. Human beta-2 adrenoceptor gene polymorphisms are highly frequent in obesity and associate with altered adipocyte beta-2 adrenoceptor function J Clin Invest 1997 100: 3005 3013.
Penalizing terms which are highly frequent in the corpus results in better precision and recall performance.
As shown in the results, penalizing terms which are highly frequent in the corpus results in better precision and recall performance.
Bone metastases are highly frequent complications of breast cancers.
Although these cavities are highly frequented in the Galapagos and the rest of the world, there are only a few studies that treat the stability and security of such caves.
The endemic area for MSF in Romania comprises regions which are highly frequented by tourists: Bucharest, the Danube Delta, and the coastal area bordering the Black Sea.
As it is highly frequent in hepatocellular carcinoma, its rescue is an important therapeutic target.
Findings from the present study show that ADHD symptoms are quite common in preschoolers, with approximately one-third of all ADHD behaviors listed in the Preschool Behavior Questionnaire being highly frequent in early childhood.
