The phrase "a better proxy of" is correct and usable in written English.
It can be used when discussing a substitute or indicator that more accurately represents or reflects a particular concept or measurement.
Example: "In this study, we found that income level is a better proxy of overall well-being than education level."
Alternatives: "a more accurate representation of" or "a superior indicator of".
However, for the purpose of measuring how inequality affects a community it is also probably the least interesting yardstick of the three.Consumption inequality, though harder to measure, provides a better proxy of social welfare.
We conditioned the intensity of Contact with relatives abroad to an indicator that can be taken to be a better proxy of government efficacy than the amount of spending, which arguably would capture scope rather than efficiency.
This finding suggests that in order to analyze the relation between the severity of language deficits and behavior, it is important to take into account the size of the gap in more than one area of language, which may be a better proxy of language functioning.
Moreover, 68% of the variance in indoor acetaldehyde concentrations was explained by CO2 levels, indicating that CO2 was a better proxy of ventilation than the presence of a ventilation system, as this latter variable did not imply that the ventilation system was running or functioning adequately.
In contrast, we found that solar radiation is a better proxy of activity levels than air temperature in surface-dwelling arthropods.
Therefore, an approach based on the average FST in our data seems to be more accurate, in the sense that the average FST of a gene is a better proxy of the amount of genetic differentiation at a given locus.
Laboratory confirmed H1N1/2009 hospital admissions were used as a proxy for influenza activity during the pandemic period, as the number of laboratory confirmed hospital admissions was considered a better proxy for the level of influenza activity than the number of laboratory confirmed cases during the pandemic period.
Although the number of different drugs (rather than the number of prescription items) may be a better proxy for the number of conditions an individual has been diagnosed with, the number of repeated prescriptions of a drug may be more likely to relate to chronic conditions.
The lack of high-quality treatment data worldwide is a concern in calculating DALYs and we assessed whether the proportion of cases with distant cancer is a better proxy for the proportion of cases who did not receive curatively-intended treatment in the three-stage natural history disease.
As expected, if we reduce the mean duration of DR TB cases to be similar to that of DS TB cases, e.g. by instituting control programs which rapidly detect and appropriately treat DR TB, the fraction of incident cases which are resistant becomes a better proxy for the fraction of prevalent cases which are resistant (Fig. 4H).
bAdult equivalent is a better proxy for the number of alcohol consuming people in a household than the number of adults because of the relatively high alcohol consumption among people 15 years old or younger in Switzerland (Annaheim and Gmel [2004]).
