Hi

I am planning to compare 2 (eventually 3) devices. I will perform 3 measurements at one time point with each device. So I will have 3 measurements with device A, 3 measurements with device B (and eventually 3 measurements with device C), all of them at the same timepoint in X subjects.

I will do a bland altman analysis to compare 2 devices, caclulate means and SD for each 3 measurements per device, precision (1.96xSD) and repeatibility index (=SDx2.77) and CoV (=SD/mean) and intraclass-correletion-coefficient (ICC).

Are there any meaningful further analysis that I can/should do to better understand the "difference" between the two devices? Would an ANOVA or Friedmann test be helpful? Or which test would be ideal in such a situation to compare the devices?

Thanks so much for your help.

Thanks so much in advance

I am planning to compare 2 (eventually 3) devices. I will perform 3 measurements at one time point with each device. So I will have 3 measurements with device A, 3 measurements with device B (and eventually 3 measurements with device C), all of them at the same timepoint in X subjects.

I will do a bland altman analysis to compare 2 devices, caclulate means and SD for each 3 measurements per device, precision (1.96xSD) and repeatibility index (=SDx2.77) and CoV (=SD/mean) and intraclass-correletion-coefficient (ICC).

Are there any meaningful further analysis that I can/should do to better understand the "difference" between the two devices? Would an ANOVA or Friedmann test be helpful? Or which test would be ideal in such a situation to compare the devices?

Thanks so much for your help.

Thanks so much in advance

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