Background: Bladder anticholinergics are the most widely used drugs to treat overactive bladder (OAB) but can contribute to cumulative anticholinergic burden, which may be associated with adverse outcomes.
Objective: This study aimed to evaluate the association between cumulative anticholinergic burden and healthcare resource utilization (HRU) and costs in older adults with OAB.
Materials And Methods: This was a retrospective, observational study that used data from the UK Clinical Practice Research Datalink (CPRD) GOLD database. Participants were aged ≥ 65 years with ≥ 3 years of continuous enrolment before and ≥ 2 years after the index date (date of OAB diagnosis or first prescription for any OAB drug between 1 April 2007 and 31 December 2015). The primary endpoint was the association between cumulative anticholinergic burden (assessed using the Anticholinergic Cognitive Burden [ACB] scale during the 3-year pre-index period) and HRU (GP consultations, specialist referrals, urological tests, hospital admissions) over the 2-year post-index period.
Results: Data from 23,561 adults were included in the analysis. Mean (SD) ACB scores in the pre- and post-index periods were 1.0 (1.1) and 2.4 (1.7), respectively; urological drugs contributed most (58.8%) to the latter. For the primary endpoint, higher pre-index ACB scores were associated with higher post-index HRU and costs. Mean (SD) ACB scores in the post-index period were 1.2 (1.3) and 2.5 (1.7) in those treated with mirabegron (beta-3 agonist) or bladder anticholinergics, respectively.
Limitations: The generalizability of the results outside the UK is unclear.
Conclusions: In older adults with OAB, higher anticholinergic burden before initiating OAB drugs is associated with higher HRU and costs. When making treatment decisions in older adults, consideration should be given to assessing the existing anticholinergic burden and using OAB treatments that do not add to this burden.
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| http://dx.doi.org/10.1007/s40266-021-00884-0 | DOI Listing |
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