Patients diagnosed with atrial fibrillation (AF) develop depression with episode
ID: 3173951 • Letter: P
Question
Patients diagnosed with atrial fibrillation (AF) develop depression with episodes of anxiety, which makes a negative impact on their quality of life. Even though there is a relationship between AF diagnosis and patients’ episodes of anxiety and quality of life found from previous studies, there is not enough research study done on the reason why this happens. Nonetheless, depression is reported as the strongest independent predictor to impair quality of life in these patients.
To use a retrospective cohort design in which we first locate a group of subjects with AF and identify which are suffering from depression and which are not. Here a diseased group is determined first and is retrospectively assessed for exposure status. Then, we consider another group of subjects which are in some sense comparable but who do not have AF and identify who are suffering from depression and who are not.
What are the a) independent , b) dependent , and c)confounding variables of your study?
Explanation / Answer
Lets first discuss all the variable in the given study
1. People diagonsed with atrial fibrillation or not diagnosed.
2. Level of anxiety
3. Quality of life level
4. Depression level
Here independent variable is the ."people affected level with AF disease".
dependend variables are level of anxiety and quality of life level
and confounding variable is the " depression level" which is interrelated toboththe variables.