The phrase "a robust indicator of" is correct and usable in written English.
It can be used when discussing something that serves as a strong or reliable sign of a particular condition or trend.
Example: "The increase in sales figures is a robust indicator of the company's growing market presence."
Alternatives: "a strong sign of" or "a reliable measure of".
Finally, comparisons of WTR calculations against a more complex 3D regional groundwater flow model have indicated that the WTR is a robust indicator of groundwater's connection to the land surface as it is a strong predictor of the propensity for local versus regional flow conditions50.
The results of our study indicate that bidirectional reporter expression provides a robust indicator of transfection and gene expression and, therefore, may favor the use of bidirectional over bicistronic reporters in the design of expression systems where the gene of interest, such as a connexin gene, contains translational motifs or long intronic regions.
The results indicated that vegetation type was not always a robust indicator of N cycling differences between ecosystems.
Because the only source of 232Th to the ocean is continental minerals, this proxy is a robust indicator of continental weathering.
Estuarine ecosystems are becoming increasingly altered by the concentration of human populations near the coastline, however a robust indicator of this change is lacking.
Cambridge University wrote to all schools and colleges urging them to retain the AS level as it stands, saying it puts pupils at an advantage because it acts as a "robust indicator" of pupils' ability as they apply to university.
Indeed, Page et al. [10] state that "bees who are sensitive to sucrose are also sensitive to stimuli of other modalities" so that "sucrose responsiveness can be used as a robust indicator for general differences of processing information in the central nervous system".
Similarly, the absence of a number of clinical signs (oral mucosa redness, angular cheilitis, residual root, glossalgia, taste disorder, denture, and ulceration) was a robust indicator for the absence of Candida.
In this respect, there is no doubt that a biochemical or clinical parameter describing the extent of a biological phenomenon over a long period provides a more robust indicator of glycemia than a parameter describing it in the short term or in a given moment only.
Compared with the occurrence of a statement regarding need, prevalence offers a more robust indicator of the strength or relative importance assigned to each domain.
In many cases, NISE also lack structural similarity, this being a more robust indicator of independent evolutionary routes towards fulfilling a common metabolic conversion [3].
