Case study statistics


I am writing my thesis and had to stop my experiments because of COVID-19.
Because of this I have to continue with a case study instead of an RCT.
Now my question is if I can use statistics in a case study and if this is useful? (it's one patient with a pre and post measurement)
I found a Reliable Change Index (RCI) and was wondering if I can use this or if there are other alternatives that you know of?

Thank you for your help,


TS Contributor
How can well tell? We don't know anything about your research questions, your trial, your patient, or wich and how many data you collected.

With kind regards