Question 3: What can we conclude from the ICC = 0.98 for BBS?
The ICC lies between 0.0, when there is no variability in the true values at all, and 1.0, when there is no measurement error at all. 0.98 is almost as high as the ICC can go, and this idicates that 0.98 or 98% of the variance of measured BBS is due to variabiity in the true value of the BBS, rather than measurement error.
There is very little measurement error compared to the variability in the true values of BBS, so BBS is a very reliable measurement.
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