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Association between Potentially Inappropriate Medication (PIM) Use and Risk of Hospitalization in Older Adults: An

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Summary

Potentially inappropriate medications (PIMs) significantly increase hospitalization risk in elderly patients. Comparing PIMs to safer alternatives reveals a 37.8% higher risk within 180 days post-dispensing.

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Area of Science:

  • Geriatric Medicine
  • Pharmacovigilance
  • Health Services Research

Background:

  • The safety of potentially inappropriate medications (PIMs) in the elderly population remains a critical concern.
  • The PRISCUS list provides a framework for identifying PIMs, but their comparative risk versus alternatives needs further elucidation.

Purpose of the Study:

  • To evaluate the association between the use of PIMs and the risk of all-cause hospitalization in elderly patients.
  • To compare hospitalization risks between patients using PIMs and those using PIM alternatives.

Main Methods:

  • Analysis of routine claims data from a German health insurer, including 392,337 patients aged 65 years and older.
  • Utilized a 6-month washout period to exclude prior PIM users or hospitalizations, with confounders assessed pre-index date.
  • Employed multivariable Cox regression to estimate adjusted hazard ratios (HRs) for hospitalization within 180 days of the first PIM dispensing.

Main Results:

  • The study cohort comprised 60.7% females with a median age of 73 years.
  • Among 79,041 incident PIM users, a significant risk factor for hospitalization was identified (HR 1.378; 95% CI 1.349-1.407) compared to PIM alternatives.
  • A total of 47,470 hospitalizations occurred within 180 days post-first dispensing.

Conclusions:

  • The use of PIMs is associated with a significantly increased risk of all-cause hospitalization in elderly individuals compared to PIM alternatives.
  • Further research focusing on specific PIMs versus their alternatives is warranted to pinpoint high-risk medications.