My paper is on "how depression is affected by the eating habits of an adult" and I would like help w ...

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My paper is on "how depression is affected by the eating habits of an adult" and I would like help with the protocol of the paper. It will be a research study with a questionnaire. I want the protocol be made. There is no limit on the word count.The information I have is that it will be a questionnaire survey where 3 questionnaires will be used. The Beck scale (for the depression scale), a FFQ (for the nutritional intake) and the third one I still don't know what it will be (it will also be the nutritional behavior). I will give the questionnaires to 100 healthy adults aged 18-65 and 100 patients (diagnosed with depression). Then through spss or jamovi I will analyze the results and compare them Bellow is the protocl that must be answered