d​‌‍‍‍‌‍‍‍‌‍‍‍‌‌‌‌‌‌‍‍​ata analysis dissertation on: changes in sleep neurophysiology due to ageing and neurodegeneration. the data analysis will be Comparing sleep polysomnography of patients with alzheimer disease and a healthy control group retrieved from an online database. I am a biomedical science undergraduate student and i would like a draft sent prior to the deadline. https://sleepdata.org/datasets/mros this link is the link to the online database that i will be retrieving data from such as my chosen participants and my polysomnography data. https://pubmed.ncbi.nlm.nih.gov/22188071/ this above article describes the study and how and when it was taken place. this should be in the methods section as well as how i filtered and chose my participants based on the criteria below. dear writer, I already ran some tests, which I can also attach for you if you’d like, but my supervisor told me that there are things wrong that I did with the data and graphs. I will copy pas​‌‍‍‍‌‍‍‍‌‍‍‍‌‌‌‌‌‌‍‍​te the email that was sent to me by the supervisor advising me on what to do if this helps. On the results: Your Control and AD group differences in age, p<0.05, that’s not good. You want your COntrol group and AD group to be in a similar age range, otherwise, age may be a confounding factor. The way to go about it is to match controls to the ages observed in your AD group. Why did you pick Mann-Whitney U for BMI and education?