The phrase "are materially affected" is correct and usable in written English.
It can be used in contexts where you want to indicate that something has a significant impact or influence on a subject or situation.
Example: "The new regulations indicate that businesses are materially affected by changes in environmental policies."
Alternatives: "are significantly impacted" or "are substantially influenced."
For all cancers combined the trends are materially affected by those for lung cancer, which have little bearing on the efficiency of diagnosis and treatment.
Whether or not this is true, there remains an important debate to be had about the speed of HTA production, the potential trade-off in terms of comprehensiveness of the compiled evidence base, and whether policy recommendations are materially affected.
It's hard to think of a sector that won't be materially affected.
Neither external non-bank nor external interbank liabilities are found to be materially affected by deposit insurance design.
That "conveys a sense of optimism that the economy will not be materially affected by the current conflict," said Sam Stovall of Standard & Poor's.
And if the outcome was materially affected by her amusing piece of self-promotion, shame on the self-important boobies who run the Academy.
Performance won't be materially affected for any models you are likely to be able to run under MSWin on a desktop or laptop PC.
Hence, myths may be cited when a situation in the present is materially affected by what version of the past is accepted.
In an update that sent Whittard shares more than 10% lower, the company said business in central London and at its tourist stores had been "materially affected" in a downturn that it fears may last until Christmas.
"We do not believe such an outlook need be materially affected by flat, or modest falls in, house prices, provided that transaction volumes do not take a sharp downward turn and cause our customers to cease trading".
It's uncertainty about what's the relationship going to be with our biggest trading partner...Why wouldn't you hold back if that's going to be materially affected?
