The phrase "affect the standard of" is correct and usable in written English.
You can use it when discussing how something influences or changes the quality or level of a particular standard.
Example: "The new regulations are expected to significantly affect the standard of safety in the industry."
Alternatives: "influence the quality of" or "impact the level of".
And so how will this latest deal affect the standard of the other service (customers) of Dollar Thrifty and new parent Hertz?
Ed Balls, the shadow chancellor, has been unable to guarantee that Labour would protect university funding, as vice-chancellors warned the party's plans to reduce the tuition fees cap would affect the standard of higher education.
Australia, however, enforced the novel's suppression on-and-off from its publication until the mid-1950s, as a former customs minister claimed that " holds up to ridicule the Creator and the Church … Such books might vitally affect the standard of Australian home life.
Withdrawal from the study will not affect the standard of care received from the practice.
A decision to decline consent or withdraw will not affect the standard of care the patient receives.
"The NHS as a whole is seeing growing demand for services and, like many other trusts across the country, this has caused us significant challenges which has affected the standard of the care we are providing our patients.
While Gurung continued to be treated by the doctors at Hamad general hospital, who diagnosed him with "anoxic brain damage most probably secondary to heatstroke" and hypertension, the fact that his sponsoring firm could not be tracked down affected the standard of care he received.
Solti's conducting was praised, but illnesses and last-minute replacements of leading performers affected the standard of singing.
The Argentine government froze citizens' bank accounts, and hyperinflation and currency devaluation severely affected the standard of living and quality of life of many Argentines.
The economic situation usually affects the standard of a country's health infrastructure, which impacts on indicators such as the under-5 mortality and life expectancy.
