The phrase "occurs less frequently" is correct and usable in written English.
You can use it to describe a situation where something happens less often than usual. For example: "Due to the current global health crisis, international travel occurs less frequently than it did before."
However, Transform Conditionals into Registration occurs less frequently.
The authors suggest that aspiration occurs less frequently than would be suspected by the symptom history.
We hypothesized that screening occurs less frequently among children whose parents do not speak English as the primary language.
Some research has shown that a family's influence on family members' career choices is conditioned by gender and occurs less frequently for female family members.
The latter mechanism occurs less frequently, but it is capable of producing much larger changes in the organism including the ability to evade a vaccine.
Cardiorespiratory arrest occurs less frequently in children compared with adults, hence both healthcare professionals and lay people are less likely to be involved in paediatric resuscitation.
The data suggest that decreased expression of p-ERK and p-Akt occurs less frequently during RM may play a role in this process.
Due to climate warming in the Baltic Sea Region, ground frost occurs less frequently than previously, leading to the expansion of Salvinia natans in the Vistula Delta.
About half of all cases occur in other breeds, including Chihuahuas, terriers and beagles, and it occurs less frequently in cats.
The connection between them occurs less frequently now than in the past, when Stockton and Malone played a two-man game that was unstoppable until age and rule changes conspired to slow them.
You can buy them at the megastores these days, at reasonable prices, thanks to tissue culture and methods of starting them from seed under laboratory conditions that can mimic the ideal that occurs less frequently in nature.
