"sustained impact" is correct and usable in written English.
You can use it to describe a long-term, lasting effect that something has had. For example, "The company's sustainable practices have had a sustained impact on the environment."
It is clear that cuts are having a sustained impact on workloads.
Whitesides has had a major and sustained impact in the chemical sciences and materials chemistry.
The event, which brought together senior figures in the fields of philanthropy and development, set out to consider how philanthropy could have a more sustained impact.
However, when simply added on as an after-thought or singled out as flagship policies, gender-based initiatives are less likely to have a positive and sustained impact.
Dimitar Berbatov, for instance, had a sustained impact not generally associated with a man who has seemed to be settling for cameos since the move from Tottenham Hotspur.
While pediatric anti-obesity lifestyle interventions have received considerable attention, few show sustained impact on body mass index (BMI).
If foundations and nonprofits agree in advance on organizational requirements in addition to desired program results, the grant has a much greater chance of having a sustained impact.
The replication of that enormous, international and sustained impact will be the job of the major studios in the near future, which in itself is nothing new.
"No individual in this country, on or off the Court, has had a more profound and sustained impact upon public policy in the United States for the past 27 years," it said.
"There is evidence that it's a sustained impact up to 2 years later".
Infection-related parameters had a short-term impact, whereas liver and renal failure had a sustained impact on mortality.
