I have data for 200 patients' blood sugar levels before and after an intervention. There are multiple readings both before and after the intervention.
In order to see if the intervention had a significant effect on the blood sugar, I plan on doing a paired t-test on the means of each persons levels before and after intervention.
My question is, is there a test that I can perform to analyze the trend in blood sugar readings, both before and after intervention? I get the idea that the paired t-test loses information about any trends.
The purpose of this is to see how peoples blood sugars trended (via absolute measure, or through categories such as prediabetic, hyperglycemic, etc) before and after intervention.
Thanks in advance for your help, it is greatly appreciated.