The phrase "a controlled study showed" is correct and usable in written English.
It can be used when presenting findings or results from a scientific or research study that was conducted under controlled conditions.
Example: "In our research, a controlled study showed that the new medication significantly reduced symptoms in patients."
Alternatives: "a regulated study indicated" or "a systematic study revealed".
Recently, Richard's friend Barry Bittman, a neurologist at Meadville Medical Center in Pennsylvania, did a controlled study showing that drumming limbers up the immune system.
We recently concluded a controlled study showing that rilonacept (Regeneron, Tarrytown, NY, USA), an interleukin (IL -1 fusIL -1rotein decoy receptor [ 20], is efusionve in decreasing the number of attacks (the protein outcome) in patients with poorly controlledecoy when compareceptorlacebo [ 20].
15 In contrast, an economic evaluation performed alongside a randomised controlled study showed that inhospital clinical pharmacist service was not cost-effective in a Swedish healthcare setting.
A randomized controlled study showed that concomitant RFA-PEI facilitated better local tumor control and long-term survival compared to RFA alone, with 5-year overall survival rates of 49.3% versus 35.9% [161].
A small controlled study showed that twin cervices were 5 mm shorter and triplets 10mm shorter at 23 24 weeks, this disparity increasing with gestational age [5].
Recently, a randomized controlled study showed no significant difference in 1-year survival when DEB-TACE was compared with bland embolization with ME [ 12].
A first controlled study showed that the intervention was successful in that clinical supervisors used more effective feedback skills after training [ 27].
A randomized controlled study showed that patients with HF who received telephone care post discharge had 84% lower HF-related readmission charges (P < 0.05) than the usual care group.
A previous randomized controlled study showed that H. pylori eradication reduced precancerous lesions without affecting overall incidence of gastric cancer [ 29].
