The phrase "a very important determinant" is correct and usable in written English.
You can use it when discussing factors that significantly influence or determine an outcome in various contexts, such as research, analysis, or decision-making.
Example: "In the study of health outcomes, socioeconomic status is a very important determinant of overall well-being."
Alternatives: "a crucial factor" or "a significant influence".
Nitrogen (N) availability is a very important determinant of crop yield.
The same goes for "discouraged" workers, those who want a job but say that there is no point in looking.According to a paper from Federal Reserve Bank of Chicago, the PTER rate is a very important determinant of wage levels.
Clearly, health status as measured by self assessed health is a very important determinant of life expectancy.
Having an automobile is a very important determinant in immigrants' job search and assimilation, as a car can significantly enlarge one's set of potential work or activity locations.
Surprisingly, the experts did not consider gender as a very important determinant, a result that opposes many previous studies [12, 23, 31].
Thus, economic system is a very important determinant of the scope of enterprises and, therefore, a very important external factor influencing business growth.
The design of ADCs with respect to the choice of target, mAb, linker and cytotoxin are all very important determinants of whether or not the threshold concentration of the cytotoxic drug is reached within the tumour cell.
There's one other, very important determinant of correctness, but a lot of people don't like it: idiom.
Attributing crime reduction to "get tough" policing and mandatory sentencing policies, minor gun control legislation and baby boomers aging past their crime-prone years ignores one very important determinant of crime in the United States: improvements in economic opportunity.
Results obtained for a sample 178 countries over the 1995 2010 period indicate that maritime transport connectivity and logistics performance are very important determinants of bilateral trade costs.
"Data from our group would suggest that, in some places, environmental factors, especially moisture levels, are very important determinants of Lyme disease risk as well".
