The phrase "a suitable proxy of" is correct and usable in written English.
It can be used when discussing a representative or substitute that adequately reflects or stands in for something else.
Example: "In this study, we consider the average income as a suitable proxy of overall economic well-being in the region."
Alternatives: "an appropriate substitute for" or "a valid representation of".
Despite meticulous effort, they were unable to support the current widely used human endotoxemia model as a suitable proxy for study of the septic microvascular permeability responses.
In this paper we focus on accessibility to jobs, however, job locations are a suitable proxy for many types of activity [37, 38] since most types of activity participation are associated with the location of some type of corresponding employment (i.e. medical jobs for health care, retail jobs for shopping, etc).
A large majority of adult wasps eclose from mummies making them a suitable proxy for determining levels of successful parasitism [ 75].
As this cost provides an upper-bound for the price that the producer can charge for its product (the principle of value-based pricing), the amount of headroom available is a suitable proxy for the commercial potential of a new medical technology.
Note that dA max does not provide a suitable proxy for the rate of cumulative cultural change if metapopulations are initialized with maximum heterogeneity.
In the case of the SM field, Maus and Weidelt (2004) proposed the Est index (external part of Dst) as a suitable proxy for describing the temporal changes of the ring current effect.
The polar amino acid glutamine is well tolerated at both the X and Y positions of the triple-helix, but does not confer the same stability as proline or hydroxyproline, making it a suitable proxy for the low stability of H6 while maintaining the hydrophobicity of H4.
Although physical measurements would be preferable, a recent study of adolescents showed that self-reported height and weight are indeed a suitable proxy to estimate the prevalence of overweight and obesity [ 50].
Given the wide reach and efficiency of surveys including self-reported measures, these results suggest that that self-reported height and weight are a suitable proxy to estimate the prevalence of overweight and obesity by BMI in a community-based sample of young people, but some underestimation of overweight/obesity is likely and should be taken into consideration.
