The phrase "a valuable index of" is correct and usable in written English.
It can be used when discussing something that serves as a significant measure or indicator of a particular quality or characteristic.
Example: "The survey results provide a valuable index of customer satisfaction within our service."
Alternatives: "a significant measure of" or "an important indicator of".
This drop in income, measured in proportion of the initial total income, may serve as a valuable index of inequality.
For example, Turner (1999), using the similar term "insurance value" rather than "option value", observes that "the number of species … serves as a valuable index of ecosystem reliability.
Therefore, VAI might be a valuable index of both fat distribution and function.
The ratio dN/ dS has proven a valuable index of the strength and direction of selection pressure.
At that time, these authors stated that they 'neither support nor refute the concept that excess lactate is a valuable index of oxygen debt' [ 4].
In toxicological studies, changes in the body weight and relative organs weights are important criteria for evaluation of organ toxicity and were used as a valuable index of insecticide-related organ damage [ 8].
Even though pTNM staging was determined to be the most important factor in predicting long-term overall survival of HCC patients after hepatectomy (Tables 3 and 4), assessment of Six1 protein level of resected tumour tissues of HCC patients may still provide a valuable index for effective management of HCC patients after hepatectomy especially during early year.
More generally, this aspect makes the N2pc a valuable index to test models of vision because it can isolate effects that may not be visible from chronometric data, which reflect the overall product of several and sometimes opposing effects ensuing at different stages of processing.
February 8 , 1577Lindley, England January 25 , 1640Oxford, England Robert Burton, (born February 8 , 1577 Lindley, Leicestershire, England died January 25 , 1640 Oxford) English scholar, writer, and Anglican clergyman whose Anatomy of Melancholy is a masterpiece of style and a valuable index to the philosophical and psychological ideas of the time.
The eco-physiological profiles coupling biochemical and molecular parameters could be used as a valuable index for monitoring the success of a restoration scheme, estimating the quality of both contaminated and restored soils.
Based on Mather's [ 16] index, 17.1% of the trees on Mintin are in the 10 most important gibbon food genera (Table 2), and the percentage of may be a valuable index for comparing potential food productivity between sites.
