I am a undergraduate research student at a university lab. I am looking to find raw data for the anomaly detection of ECG measured by the apple watch. I understand that Healthkit provides a visual graph of the ECG data. However, I am in need of the numerical data for research purposes. Is there a way for me to get to this dataset?
Take a look at this paper, some of your peers seem to have addressed the need: https://www.researchgate.net/publication/351923381_Accessing_the_ECG_Data_of_the_Apple_Watch_and_Accomplishing_Interoperability_Through_FHIR
If the app referenced by Claude31 is available to you/your university, then this would be the way to go in getting data from a variety of volunteer subjects who have an ECG capable Apple Watch and an iPhone.
However, if you're a developer with an Apple Watch & iPhone and/or have colleagues with them and you're only collecting your data (or your colleagues') , then a fairly simple Swift App will suffice to get the raw data, which are a timestamp and voltage. The Apple documentation is https://developer.apple.com/documentation/healthkit/hkelectrocardiogram
I use my such app to create a CSV file, which I then import to an ECG Viewer. I use this setup quite frequently, as well as data from a Polar H10 ECG app, to monitor my various arrhythmias and provide data to EDs as required (unfortunately, too often for comfort!).
Regards, Michaela