There were low inter-observer differences between each pair of observations for radiographs taken at diagnosis and at 1- and 5-year follow-up, indicating good agreement in both the affected and unaffected hips (Table 1).
In the present study, observers who had a consensus-building meeting before performing the measurements had low differences between each pair of observations and a narrow range of 95% limits of agreement, indicating good inter-observer agreement.
The tools concern the quantization error in a SOM, and the neighborhood relations (both at the level of a specific pair of observations and globally on the map).
Spatial clustering was assessed using the intracluster correlation coefficient, which may be interpreted as the expected correlation between any randomly selected pair of observations drawn from the same cluster.
Reliability quantifies the minimum magnitude of outlier that can be detected (Baarda, 1968), while separability determines the minimum bias that can be separated for every pair of observations (Wang and Knight, 2012).
However, the UMP test does not exist in this case because the likelihood ratio between the pair of observations depends on which one of the four different sensor-output combinations was received at the fusion center.
One obvious reason is that Kendall's τ uses information on (T,δ) for each pair of observations.
Whereas each row of Wi corresponded to a single observation from which the observation of interest is reachable in i steps, each row of Wi,j corresponds to a pair of observations, one found i steps before the observation of interest and the other found j steps before.
Of the 36 participants, 10 contributed more than one work/nonwork pair of observations.
