In the model that considers 4 frailty status categories, the interaction between age and sex did not reach statistical significance ( p = 0.066), but in the model that considers frailty in two categories, a significant interaction was observed between age and sex ( p = 0.034) on healthcare costs.
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Relationship of frailty status with health resource use and healthcare costs in the population aged 65 and over in Catalonia.
1
0.0660
0.0660