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Objective
Evaluate the Pain Impact Index, a simple, brief, easy‐to‐use, and novel tool to assess the impact of chronic pain in community‐dwelling older adults.
Methods
A Rasch modelling analysis was undertaken in Stata using a partial credit model suited to the Likert‐type items that comprised the Index. The Index was evaluated for ordering of category thresholds, unidimensionality, overall fit...
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