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Severe Polypharmacy Increases Risk of Hospitalization Among Older Adults With Inflammatory Bowel Disease
Darren Drittel1, William Schreiber-Stainthorp2, Olivia Delau3
1Thomas Jefferson University-Sidney Kimmel Medical College, Philadelphia, Pennsylvania, USA.
Introduction:
As the inflammatory bowel disease (IBD) patient population is aging, the prevalence of polypharmacy is rising. However, data exploring the prevalence, risk factors, and clinical outcomes associated with polypharmacy among older adults with IBD are limited. The aim of the study is to determine (i) prevalence of polypharmacy (≥5 medications) and potentially inappropriate medication (PIM) utilization in older adults with IBD, (ii) changes in medications over time, (iii) predictors of polypharmacy, and (iv) the impact of polypharmacy/PIMs on 1-year hospitalization rates.
Methods:
We conducted a retrospective single-center study of older adults with IBD from September 1, 2011, to December 31, 2022. Wilcoxon-signed rank and McNemar tests were used to assess changes in polypharmacy between visits, with ordinal logistic regression and Cox proportional hazards models used to determine risk factors for polypharmacy and time to hospitalization, respectively.
Results:
Among 512 older adults with IBD, 74.0% experienced polypharmacy at the initial visit, with 42.6% receiving at least one PIM. In addition, severe polypharmacy (≥10 medications) was present among 28.6% individuals at the index visit and increased to 38.6% by the last visit ( P < 0.01). Multivariable analysis revealed that age ≥70 years, body mass index ≥30.0 kg/m 2 , previous IBD-related surgery, and the presence of comorbidities were associated with polypharmacy. Moreover, severe polypharmacy ( adj hazard ratio 1.95, 95% confidence interval 1.29-2.92), as well as PIM use ( adj hazard ratio 2.16, 95% confidence interval 1.37-3.43) among those with polypharmacy, was significantly associated with all-cause hospitalization within a year of the index visit.
Discussion:
Severe polypharmacy was initially present in more than 25% of older adults with IBD and increased to 34% within 4 years of the index visit. Severe polypharmacy, as well as PIM utilization among those with polypharmacy, were also associated with an increased risk of hospitalization at 1 year, highlighting the need for deprescribing efforts in this population.
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