Randomized Trial of a Control Group and an Experimental Group: A Comparative Analysis

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Understanding Research Results The researchers analyzed the data they collected as if it were (d) experimental because it was a randomized trial using a control group and an experimental group where the experimental group was administered an empowerment program and the results of the two groups compared. The mean posttest empowerment score for the control group was 97.12, listed in table 1. The comparison of mean baseline, 14.00, and posttest depression scores, 13.36, of the experimental group was 0.64 lower, indicating that empowerment programs can reduce depression in renal patients. This was expected because they hypothesis is that patients with ESRD, who obtained the empowerment program, have higher levels of empowerment and self-care self-efficacy and less depression. The control group's mean baseline and posttest depression scores are the same at 10.40. This strengthens the validity of the study results because the hypothesis predicts improvement with empowerment programs and the control group had no empowerment program. The control group had the least amount of variability with 0.04 for empowerment, 1.6 for self-care self-efficacy, and 0.00 for depression compared to the experimental group with 8.24 in empowerment, 6.44 for self-care self-efficacy, and 0.64 for depression. The empowerment variable showed the greatest amount of variability with 8.2 compared to self-care self-efficacy variability of 4.84. The mean is a measure of the average of a distribution
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