"straightforward indicator" is a correct and usable phrase in written English.
You can use it when you are referring to something that provides clarity and/or obviousness. For example, "The rise in job postings is a straightforward indicator of an increasing demand for workers."
But there is one relatively straightforward indicator of fire risk that can be tracked and mapped.
"This is the most straightforward indicator of why we don't want the government doing this, except in an emergency," said Douglas J. Elliott, an economist at the Brookings Institution who supports the new lending program but worries about its long-term implications.
The metal content (when present in the order of magnitude of ∼10 ppm) is not a straightforward indicator of the electrocatalytic performance for this reaction.
The problem of congestion prediction is translated into traffic amount (i.e. the number of vehicles on the individual roads) prediction, as the latter is a straightforward indicator of the former.
In this paper, the problem of congestion prediction is translated to the prediction of traffic amount (i.e. the number of vehicles) on a road link, as high traffic amount is a straightforward indicator of congestion.
As a consequence, the results might not have fully reflected the true range of variability of /dz/ realization, as syllable and word lists can be a fairly straightforward indicator of the study aim, and speakers would consequently be more conscious of their pronunciation [cf. Fon et al. (2011)].
For example, research looking in depth at attempts to implement ventilator associated pneumonia bundles shone a light on how even straightforward indicators are open to wide interpretation.
It consists of three distinct phases: (i) metabolic engineering to create the evolutionary pressure on the applied strain followed by (ii) a cultivation phase with growth as straightforward screening indicator for the evolutionary event, and (iii) comparative whole genome sequencing (WGS), to identify mutations in the evolved strains, which are eventually re-engineered for verification.
When this is the case, and the alternatives to examine are finite and few in number, it is clear that the procedure for solving the problem is straightforward: the indicator (objective) is assessed in correspondence with each alternative, and the alternative that provides its best value is selected.
In conclusion, TEER is a straightforward quality indicator which could be routinely used to monitor the differentiation status of oviduct epithelial cells in vitro.
In this follow-up study, we evaluate whether TEER measurement could serve as a straightforward quality indicator for differentiated oviduct epithelial models.
