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Chronic disease, such as type I diabetes can lead to observer medical complications. For a long...

Chronic disease, such as type I diabetes can lead to observer medical complications. For a long time, the medical community was divided on whether or not to aggressively control the patients’ blood glucose levels. The Diabetes Control and Complications Trial (DCCT) randomly assigned volunteers with type I diabetes without retinopathy either to a conventional treatment or to a more intensive treatment aimed at maintaining blood glucose levels as close to normal as possible. The health of 378 patients in the conventional care group and 348 in the intensive care group was closely monitored for about 6 years. By the end of the study, 91 patients in the conventional treatment group had developed retinopathy, compared to only 23 in the intensive treatment group.

a. Briefly describe the objective of this study.

b. Describe the parameter we are interested in making decision about. Determine the point estimation of the parameter.

Solutions

Expert Solution

a. The objective of the study is to compare the proportion of patients developed retinopathy in the conventional treatment group with intensive treatment group in order to test which treatment is more effective.

b. The parameter of interest in making decision is proportion of patients that developed retinopathy.

For Conventional Treatment group the proportion of patients developed retinopathy is = 91/378 = 0.2407

For intensive treatment group the proportion of patients developed retinopathy is = 23/348= 0.0661

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orchestra answered 2 years ago
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