"a study performed" is a grammatically correct phrase and can be used in written English.
It is typically used to describe a study that has been conducted or carried out. Here is an example: "According to a study performed by Harvard University, regular exercise can improve cognitive function in older adults."
A study performed thirty-four months after the Oklahoma City bombing found that the rate of P.T.S.D. was twenty-three per cent among male civilian victims and only thirteen per cent among firefighters.
Portuguese soccer fans are 14.67 times as confident as the rest of the world that Portugal will win the World Cup, according to a study performed by comScore Networks, an Internet consumer-research firm.
A study performed last year found that using the tablet instead of the equivalent in raised dots on paper had similar benefits for young students.
According to a study performed by Wakefield Research, around 75percentt of 2,000 respondents said they are unfulfilled by their current job.
According to a study performed in January by app analytics firm Flurry, Xiaomi smartphone users spend 7percentt more time in apps than Apple users in China.
A study performed at the National University of Singapore has confirmed what many of us seem to know intuitively: taking a little time off of coding or writing to check your favorite blogs or webcomics is actually a productive behavior.
This paper presents results of a study performed in the EU FP7 Project OCTAVIUS.
We validated our day-by-day comparison by comparing it to results of a study performed at Columbia University.
A study performed in mouse indicates that retinoblastoma arise from a precursor cell that is naturally death-resistant [34].
Our work was a study performed in two French headache centers (Marseilles Nice) from 12/2005 to 12/2008.
Another limitation concerns the estimates for the health utilities, which were taken from a study performed in the US.
