The phrase "a pivotal study" is correct and usable in written English.
It can be used to describe a research study that is crucial or significant in a particular field or context.
Example: "The researchers published a pivotal study that changed the way we understand climate change."
Alternatives: "a crucial study" or "a landmark study".
In a pivotal study that was the basis for the approval, Prolia reduced the incidence of vertebral, nonvertebral, and hip fractures in postmenopausal women with osteoporosis.
A pivotal study found that if an infected person was treated with drugs immediately, the risk of transmission to an uninfected partner was cut by 96 percent.
In the United States, a pivotal study is currently recruiting patients (NCT02168764).
This began with a pivotal study, which showed that identical twins shared more similar political opinions than fraternal twins.
One is expected to be an update from data presented at ASCO last year, but the other is new data from a pivotal study.
Much of the Pickens Plan was based on a pivotal study released in May by an ad-hoc group of energy authorities including the U.S. Department of Energy, the American Wind Energy Association (AWEA and American Electric Powerr].
If significance is achieved, then the study will be considered a successful pivotal study for efficacy.
A common pivotal study (the GLOBE trial) was considered by all three agencies.
Prospective use of the Semmes Weinstein monofilament examination in a future pivotal study to quantify the number of insensate sites might provide indirect evidence of disease modification.
The 3-weekly combination of trastuzumab and paclitaxel has been approved for the treatment of advanced breast cancer based on a large pivotal study.
A larger scale pivotal study had commenced in the USA but was then stopped due to lack of efficacy in the treatment compared to the control arm and has not, to date, been resumed.
