Ketter and his colleagues compared a healthy control group with bipolar patients, depression patients, and a control group of graduate students in writing and the arts.
The creative control group had about the same increase in score relative to the healthy control group.
In the field experiment, the researchers divided batches of new call agents into an individual identity group, an organizational identity group, and a control group.
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Researchers in Germany randomly assigned participants to a mindfulness intervention group or a control group.
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General results have shown that students from the experimental group gained more than those from control group.
In 1972, Campbell's university began a project to track the success of a group of preschoolers and a similar control group of kids who were not given access to preschool.
Half the babies were placed in a sleep-training group and the other half in a control group that did not use sleep training.
Detecting any effect would require that both the control group and the test group were enormous.
These are the gold standard randomized control trials or intervention studies, in which a control group consuming soda is monitored for weight gain over time against a group which stops drinking soda (and all other dietary and lifestyle factors are controlled for).
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After three years, those in the exercise therapy group had maintained their bone density, unlike the small control group that was inactive.
The researchers found that, as a whole, the WoW group saw a greater increase in cognitive performance than the control group, though improvements tended to vary on a person-to-person basis.
His paper in the Southern Medical Journal concluded that patients in the intercessory prayer group had "a significantly lower severity score" than the control group.
Dr Roi Cohen Kadosh, study author from the department of experimental psychology at the University of Oxford, said the noise stimulation group showed improvements in cognitive and brain functions compared with the control group.
After 4.8 years of follow-up a primary endpoint event (the composite of MI, stroke, and death from CV causes) occurred in 3.8% of patients in the Mediterranean diet extra-virgin olive oil group, 3.4% in the Mediterranean diet with nuts group, and 4.4% of patients in the control group.
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Similarly, in patients who have just had bypass surgery, the group randomized to an ICD did not have better survival than the control group.
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Among the meditation group, there were 20 such occurrences, compared with 32 in the control group.
Patients in the exercise group reported lower cholesterol levels and less back pain than those in the control group.
Almost three-quarters of the group given the therapy have not relapsed, compared to 44% in a control group given surgery then another drug which stimulates the immune system.
Additionally, employees in the individual identity group had garnered higher customer satisfaction scores during the seven months than those in the control group.
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The researchers compared a group of 105 women who had all suffered recurrent spontaneous miscarriages with a carefully matched control group of 91 postmenopausal women who had never had a miscarriage and who had given birth at least twice.
For example, one of the most widely cited intervention studies on soda and weight, ( Ebbeling et al. 2006) took 103 adolescents aged 13 to 18 who regularly consumed soda and randomly assigned them to either a group that received no calorie beverages for six months by way of home delivery or a control group that carried on drinking soda as normal.
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The turnover rate in the control group was 47.2 percent higher than that of the individual identity group, and 16.2 percent higher than that of the organizational identity group.
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Creating greatly improved opportunities for real "advice" on the part of the Senate -- in particular via its new National Security Working Group (the successor to the Senate's Arms Control Observer Group), chaired by Senator Cochran -- during the crafting of negotiating positions and the conduct of the negotiations themselves.
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However, 5% of patients who got the valve had strokes, compared to 1% in the control group, and 16% had vascular complications, compared to 1% in the control.
To simulate heightened stress, a test group of men were placed in interview and public speaking scenarios and their BMI preferences compared against a control group of non-stressed men.
The way that the study selected a control group also biases the results, Davis said.
The control group went through the traditional process, focused on firm awareness and skills training.
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He figured that smallish trials with no control group too often yield ambiguous data.
Those added households will be a control group to maintain statistical validity, Cole explains.
The dozen men in the control group with no regrafting showed no return to potency.
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