The phrase "are often influenced" is correct and usable in written English.
It can be used to describe how certain factors or elements have an impact on something frequently or regularly.
Example: "Children's behavior and attitudes are often influenced by their peers and family environment."
Alternatives: "are frequently affected" or "are commonly shaped".
The rankings are often influenced by the popularity of celebrities.
Attitudes to mental health are often influenced by both.
Those concertgoers' ticket-buying decisions are often influenced by recognition of the artists involved.
The decisions as to what experiments are done are often influenced by politics, ranging from office to inter-governmental level.
This pushing action turns out to be important, because people's beliefs are often influenced by bodily feelings and movements.
Unfortunately, governments around the world are often influenced by powerful individuals and companies seeking short term financial gain, and are hampered by inertia and poor decision making.
But central policies are often influenced by these campaigns, and the results play a big part in determining the political strength of the parties in Delhi.
The report suggested that people's intuitions are often influenced by personal experience, as well as reports (or misreports) in the media.
Mr. Nes, 47, has explored issues of Israeli identity and masculinity in his photographic work by creating visual tableaux that are often influenced by art history and philosophy.
Our definitions of success are often influenced by external realities, and in traditional hierarchies with masculine definitions of merit there are still fewer women than men in top-level positions.
The ONS posed a variety of such queries: participants were asked to make broad judgments about their lives, but, recognising that such answers are often influenced by fleeting moods, researchers also asked them to describe their mood yesterday.
