"proxy indicator" is a correct and usable phrase in written English.
It is used to describe a piece of data or information that is used as a stand-in for a more precise measurement. For example, "Gross Domestic Product is often used as a proxy indicator for a country's overall economic health."
Mr. Kudrin's standing is being closely watched as a proxy indicator for Russia's approach to the financial crisis.
Until recently, the most notorious of their studies used the passage of legislation that allowed private citizens to carry concealed firearms as a proxy indicator of gun ownership.
One of the resulting studies found that in Mexico, municipalities with greater levels of violence associated with drug cartels had a 6.8% lower rate of electricity consumption – considered a proxy indicator for GDP – than did less violent municipalities.
Also, cost factors are incorporated using a proxy indicator.
As such, cost recovery can be used as a proxy indicator of sustainability.
Thus, in this paper seasonal food insecurity is regarded as a proxy indicator of green famine.
Durable index is a measure of asset endowment and was a proxy indicator for household welfare.
River ice breakup dates (BDs) are not merely a proxy indicator of climate variability and change, but a direct concern in the management of local ice-caused flooding.
The aim of this study is to illustrate how a widely-used indicator (the vertical profile of a city) may represent a proxy indicator of urban diffusion.
These results caution against using C4 plant abundance as a proxy indicator of either climate or pCO2 without an adequate understanding of key controlling factors.
For example, the urban characteristics, especially the types of land use, are considered a potential proxy indicator to evaluate risk of disease.
