The phrase "a demonstrable decrease in" is correct and usable in written English.
It can be used when discussing measurable reductions in a particular variable or phenomenon, often in scientific or analytical contexts.
Example: "The study revealed a demonstrable decrease in air pollution levels over the past decade."
Alternatives: "a measurable reduction in" or "a clear decline in".
UNICEF Ghana's health team expects to see a demonstrable decrease in newborn deaths in the next three to five years, which will contribute to a significant decline in the infant mortality rate that has so far tended to stagnate.
In MCI, the affected individual subjectively complains of memory problems but has generally normal cognitive and daily functioning despite a demonstrable decrease in memory performance on testing (Peterson et al 2001).
Additionally, when we analyzed the protein expression of p-Rb there was a demonstrable decrease in expression of p-Rb in the PEO1 and PEO4 compared to the A2780 cells with the cisplatin-resistant PEO4 line demonstrating the largest decrease in p-Rb expression across the three cell lines (Fig. 3E).
As shown in Figure 4C, in the non-tumorigenic mammary epithelial cells (76NE6 and MCF-10A), there was no demonstrable decrease in cell growth following treatment with PBS, Ad-Luc or Ad-Elafin, despite the high levels of elafin overexpression achieved.
In Australia, where vaccine uptake ranges from 50 70%, surveillance data have shown a considerable decrease in vaccine-targeted genotypes (Tabrizi et al, 2012) and ecological studies have shown a demonstrable reduction in cervical high-grade abnormalities associated with the quadrivalent HPV vaccine (Brotherton et al, 2011).
Demonstrable effectiveness means a measurable decrease in shark bite incidents in response to culling activities.
Do you have "excellent communication and analytical skills" and a "demonstrable interest in higher education"?
But there is a demonstrable bias in recent presidential elections towards a younger candidate being able to successfully contrast stylistically against an older one.
