Strategies to reduce low-value care - An applied behavior analysis using a single-case design.

Because few patients presented with arthrosis per month at the center, it was difficult to see a clear trend.

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During the lecture phase, there was a decreasing trend and an increased variation with a mean of 7.0 x-rays per month, varying from 3 to 14 x-rays ordered per month.

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When examining the data within each of the four phases to determine the pattern of each phase (step 2), the baseline phase showed an increasing trend and a low variation.

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