The phrase "a randomly controlled study" is not correct; it should be "a randomized controlled study." You can use it when referring to a type of scientific study that randomly assigns participants to different groups to test the effects of an intervention.
Example: "The researchers conducted a randomized controlled study to evaluate the effectiveness of the new medication."
Alternatives: "a randomized trial" or "a controlled randomized study."
The company wanted to market its pomegranate juice with unqualified health claims, based on findings from one randomly controlled study.
Generally, evidence from observational studies is not considered as strong as that from randomly controlled studies.
Authors reviewed randomly controlled studies of universal prevention of childhood obesity, identifying 29 studies that met review criteria.
The Canadian Medical Association Journal found in July that there are very few randomly controlled studies on artificial sweeteners — just seven trials involving only about 1,000 people — that looked at what happened when people consumed artificial sweeteners for more than six months.
While one review of randomly controlled studies showed that mindfulness may have mixed effects on the physical symptoms of heart disease, a more recent review published by the American Heart Association concluded that, while research remains preliminary, there is enough evidence to suggest mindfulness as an adjunct treatment for coronary disease and its prevention.
Compared with randomly controlled studies in which patients benefited from corticosteroid treatment [ 2- 4], all patients of this study received the same antibiotics.
Recipients of free and subsidized grid connections in the Kenyan study were selected randomly, which allows Wolfram's team to do controlled studies comparing outcomes in households that did and did not get a grid connection.
Few diet studies are randomly controlled and follow participants for years, Mann said.
The trial was initially designed as a before-and-after study with a randomly selected control group (see reference [ 11], Figure 1, for timeline).
