The phrase "a demonstrated pattern" is correct and usable in written English.
It can be used when referring to a consistent and observable trend or behavior that has been shown through evidence or examples.
Example: "The research revealed a demonstrated pattern of increased productivity among employees who work flexible hours."
Alternatives: "an established trend" or "a proven pattern".
This is a demonstrated pattern for him, for all the reasons listed at the top of this post.
However, Abbott's latest comment about a female candidate for office does conform to a demonstrated pattern of using problematic language to describe women.
In examining whether Congress was addressing a demonstrated "pattern of unconstitutional employment discrimination by the states," the Court gives superficial treatment to the requirement that we "identify with some precision the scope of the constitutional right at issue".
This in turn must be answered by asking whether subjecting states and their treasuries to monetary liability at the insistence of private litigants is a congruent and proportional response to a demonstrated pattern of unconstitutional conduct by the states.
Repeat offending is a consistently demonstrated pattern within criminological research, whereby a small number of offenders are responsible for a very large amount of crime.
The patient should be examined in a standing position to demonstrate patterns of teleangiectasias, reticular veins, and varicose veins.
The above illustration estimates cell antenna radiation by assuming a certain demonstrated radiation pattern (ie. wide when viewed from the top, and thin when viewed from the side).
As in the previous tables, for each pattern, we present a sentence and a triple demonstrating the pattern operation.
As expected, Fig. 2(a) demonstrates a characteristic banding pattern.
It said that Hasan demonstrated "a pattern of poor judgment and a lack of professionalism".
But James A. Amann, a Democrat who is House majority leader, said he it demonstrated "a pattern that fits with all the other lapses surrounding Mr. Rowland".
