re: st: Checking reliability of a measurement device

[David Airey <david.airey@vanderbilt.edu>]

> Hi Statalisters,
>
> a Dentistry PhD student did some measurements on 12
> teeth with varying conditions and he asked me how
> could he show that the device used for the
> measurements is reliable. More specifically each one
> of the 12 teeth has been measured by this device by 2
> raters (a and b) X 2 time points (week 1 and week 2) X
> 6 relative positions =   24 measurements. The goal is
> to show that the discrepancies among measurements are
> not statistically significant.
You might look at Stata's "kappa" and "alpha" commands...

-Dave

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