The phrase "a valid first step" is correct and usable in written English.
You can use it when discussing the initial actions or measures taken towards achieving a goal or solving a problem.
Example: "Implementing a feedback system is a valid first step in improving customer satisfaction."
Alternatives: "an acceptable initial action" or "a legitimate starting point".
The results suggest that the present strategy might be a valid second step for identifying high penetrance genes.
We consider that the present strategy might be a valid second step for identifying high penetrance genes, specifically when the regions of interest show significant evidence of linkage.
Nevertheless, pathway databases are growing and pathway analysis has proven itself as a valid and intuitive first step in the analysis process.
"It is elementary in patent law that, in determining whether a patent is valid and, if valid, infringed, the first step is to determine the meaning and scope of each claim in suit". Lemelson v. Gen. Mills, Inc., 968 F.2d 1202, 1206, 23 USPQ2d 1284, 1287 (Fed. Cir. 1992).
As a first step a three dimensional model valid for all deformation ranges was selected and implemented as a user material into commercial finite element software.
In a first step we aim for a valid, not necessarily perfect, core field model and a corresponding, appropriate external field description.
Having a valid certificate is the first step in verifying your identity via MIT's Touchstone authentication service.
5 Therefore, the availability of complete and valid information on patients' ethnicity in routine National Health Service (NHS) data is a fundamental first step to enable equality audits to inform improvement actions.
Overall, our results provide a significant first step in demonstrating that a classic cognitive neuroscience measure can be adapted to serve as a reliable and valid index of variation in creative abilities.
