The phrase "attributed by them" is correct and usable in written English.
It can be used when indicating that a certain quality, action, or statement is assigned to a specific group of people.
Example: "The success of the project was attributed by them to their innovative approach and teamwork."
Alternatives: "credited to them" or "ascribed to them".
In reality, most of the problems attributed by them to demographics have very different causes.
The relative stability of the velocity of circulation is attributed by them to the facility with which the supply of money accommodates itself to demand; they argue that insofar as supply may be restricted in the face of rising demand, velocity will increase, or (what really amounts to the same thing) new sources of credit, such as trade credit, will be exploited.
Since mid-February, roughly half a dozen blasts have taken place in Shia areas, most or all of them attributed by local residents to Israel.
There was a woman whose repeated falls and severe tremor were erroneously attributed by five doctors — one of them her husband — to rapidly worsening Parkinson's disease, not an out-of-whack and easily remedied level of lithium, a drug that hadn't been properly monitored.
The increases were attributed by Mr. Sulzberger to rising production costs.
–For each fact or quotation, identify the source attributed by the reporter.
One of the ex-directory numbers was attributed by Whittamore to Milly's family home.
Later, these carpets were attributed by art historians to Herāt and, more recently, to Indian centres.
Their growth has been attributed by some to being attractive to people on the far right, conspiracy theorists and "very noisy careerists" as their deputy once called them.
These epic gestations are attributed by awed Tartt admirers and devotees of websites such as Donna Tartt Shrine to uncompromising perfectionism.
The father died after a stroke and heart attack, attributed by his doctor to the campaign against the family.
