The phrase "are warranted before" is correct and usable in written English.
It can be used in contexts where you are discussing conditions or justifications that need to be met prior to a certain action or event.
Example: "The changes to the policy are warranted before we proceed with the implementation."
Alternatives: "are justified prior to" or "are necessary before".
In short, skepticism and caution are warranted before swallowing the claims of market fundamentalists whose research finds that marketizing education has a positive effect on education.Mark Cassell Kent, Ohio SIR —Living in Southern California and bringing two kids through the Los Angeles school system convinces me that the education system in America is broken beyond any conventional repair.
Further studies with larger population are warranted before considering fluid restriction trials.
Future studies incorporating prospective research designs are warranted before definitive statements can be offered regarding the long-term impact of sport-related concussions on cognitive control.
Therefore, further studies addressing this question are warranted before starting campaigns to reduce the use of antidepressants in primary care.
More studies are warranted before firm conclusions can be made.
However, linkage studies of ADHD + ASD samples are warranted before firm conclusions can be drawn.
A short reflection on these achievements is warranted before quickly turning our attention to the remaining challenges.
But he called for applying a more rigorous standard of whether United States military intervention was warranted before committing troops to the field.
While some restraint is warranted before proclaiming this the "Twitter revolution", what should be obvious is that the only reason we're able to see, hear, read – and yes, argue – about what's been unfolding in Iran is due almost entirely to new media technologies.
A randomized clinical trial is warranted before definitive Conclusion: References. 1. Lancet Respir Med 2014; 2 9):706–16.
