The phrase "advocated by a number" is correct and usable in written English.
It can be used when referring to a concept, idea, or proposal that has support from multiple individuals or groups.
Example: "The new policy on climate change is advocated by a number of environmental organizations."
Alternatives: "supported by several" or "endorsed by multiple".
If we wanted to move to price-level targeting, as was advocated by a number of the academics at the conference, we should have that discussion.
But in expressing concern that the low unemployment rate could ignite inflation, the statement recognized a position advocated by a number of other Fed officials, including Laurence H. Meyer, a Fed governor.
She declined to label the Bush letter a formal "strategic framework" to guide Washington-Moscow relatinto inthethe future, a concept advocated by a number of Russian analysts and scholars who have been troubled by the caustic tone of the relationship.
Mr. Lazio has criticized Mrs. Clinton for saying she supported the creation of a Palestinian state before, but today he directly questioned the wisdom of a step that had been advocated by a number of Israeli leaders, at least before this latest round of violence, as a way of constructing a lasting peace agreement.
Unfortunately, by Buridan's time the principle of contraposition had been advocated by a number of authors.
Early fibrinogen substitution is advocated by a number of authors.
Returning to the Moon has been advocated by a large number of international planetary scientists in order to answer several key scientific questions.
Sequestration, meaning the budget cuts that would have been required had no fiscal cliff legislation passed, was not something advocated by a significant number of people.
Conclusions support taking a whole-person approach, as advocated by a growing number of health care professionals, which would not only help to treat the emotional and social aspects of living with cancer, but also provide considerable long-term cost savings to overburdened health-care systems.
He developed a structured curriculum to deliver this, which is now being advocated by an increasing number of schools and academies in the UK.
At the World Economic Forum he said climate change was "not universally accepted", but evidence of its danger had been "clearly and persuasively advocated" by a very large number of "independent voices".
