The phrase "a major indicator" is correct and usable in written English.
It can be used when discussing something that serves as a significant sign or measure of a particular condition or trend.
Example: "The unemployment rate is often considered a major indicator of the health of the economy."
Alternatives: "a key sign" or "a significant measure".
Perhaps a major indicator of Argentine insecurity is the country's heavy dependence on psychotherapy.
However, a major indicator of poverty is not just income source but age.
A key finding is the importance of taxation, cited as a major indicator for measuring state performance.
Education levels remain a major indicator of who is among the 137 million Americans using the Internet and who is not, said Ms. Fox.
Machinery orders, a major indicator of corporate capital spending, rose 12.7percentt in September from August, making up for a surprising decline the month before.
So some economists prefer to look at rolling 12-month periods to evaluate the strength of job creation, a major indicator of economic health.
"How Giuliani works through this situation will be a major indicator of how he reacts when he's not in the driver's seat".
Population change is a major indicator of the demographic health of a country, and is made up of three flows — births, deaths and immigrants.
"That has to be a scary proposition for the owner of a team," Ganis said, "because it's a major indicator of the future problems".
He said: "It is a fact that unfortunately negotiations haven't moved very far, but that is not a major indicator of lack of progress because this is the way negotiations go.
Mr. Miyashita, manager of the Fuji View Hotel, had just been confronted with statistics showing that the number of low-frequency earthquakes, a major indicator of an impending volcanic eruption, had risen sharply near his hotel.
