The phrase "a substantial time frame" is correct and usable in written English.
It can be used when discussing a significant duration or period of time required for a particular task or event.
Example: "The project will require a substantial time frame to ensure all aspects are thoroughly addressed."
Alternatives: "an extended period" or "a considerable duration".
But one thing we can definitively rely upon is the fact that consistent, timed exams are the key to scoring well over a substantial time frame.
We used a sustained decrease in DQOL score to confirm that a change occurred over a substantial time frame and was not transitory.
The objective of this study was to explore the health care costs and resource utilization associated with PAH in a large, national US managed care health plan using contemporary real-world data with a substantial time frame (five and one-half years).
Another important finding is that the antibody levels remained protective for a substantial time after pH1N1 vaccination without a clear diminishing pattern within the current follow up time frame.
Knowledge workers spend a substantial time in meetings.
Nonetheless, the ability for B. canis to diversify over a short time frame has substantial implications for our understanding of infection caused by B. canis.
Sixty-seven electronic databases were systematically searched with a publication time frame between 1980 (we did not expect substantial qualitative research on CAM before 1980) and July 2011.
Hospice is a philosophy, not a place or time frame.
Regarding cohorts, we have learned there are substantial benefits to employing germline, familial, or increased-risk cohorts, including, among others, more power over a shorter time frame.
For people operating on a shorter time frame, there is good news as well, for in the past decade or so, there has been substantial progress in this field.
Studies of diabetic complications in other organs using this model indicated a time frame of 4-6 mos produced substantial effects [ 38, 39].
