The phrase "a study has concluded" is correct and usable in written English.
You can use it when summarizing the findings or results of a research study.
Example: "According to the latest research, a study has concluded that regular exercise significantly improves mental health."
Alternatives: "a study has found" or "research has determined".
A study has concluded that insect repellents containing the chemical DEET provide the best protection against mosquito bites.
Kangaroo care, a technique for soothing premature babies with skin-to-skin contact, can help calm babies born at full term as well, a study has concluded.
Driverless cars and "super-Uber" fleets of robot taxis have the potential to disrupt the car-owning democracy that has shaped urban planning and personal transport over the past century, a study has concluded.
Children are less likely to have a nut allergy if their mother ate nuts while pregnant, a study has concluded.
A9 World Briefing A6 NATIONAL A10-15 Sprawl, Not Logging, Cited In Southern Woods' Decline A Forest Service study has concluded that the biggest threat to Southern forests is urban sprawl, a finding that to some degree absolves the timber industry for the effects of a logging boom that transformed the South in recent decades.
People who have ready access to a firearm are almost twice as likely to be killed and three times likelier to commit suicide than those without a gun available in the home or from a neighbor or friend, a new study has concluded.
A federal study has concluded that a sand cap can be used to cover DDT and PCB deposits on the ocean floor off Southern California.
Giving used eyeglasses to poor countries may please the donors, but it is not worth the high delivery costs, a new study has concluded, and a $10 donation would do more good.
Drinking just two cups of coffee a day could dramatically improve your sex life, a university study has concluded.
A new study has concluded that for many scalp wounds, taking a few strands of hair from each side of the wound, twisting them together and gluing them into place may be a better treatment than stitching.
A NEW study has concluded that mutual fund families often play favorites with their funds.
