The use of PN has increased significantly over time for all clinical stage groups. PSM rates increased, while 30-day readmission rates decreased. The PSM rate increase was driven by increasing use of minimally invasive approaches, and not by higher clinical stage. The 30-day readmission rate was driven by patient comorbidities and socio-economic factors. Rising PSM rates represent a quality-of-care concern.
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Fero et al. (2017) studied this question.