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01.12.2017 | Research Article | Ausgabe 1/2017 Open Access

BMC Geriatrics 1/2017

An investigation of factors predicting the type of bladder antimuscarinics initiated in Medicare nursing homes residents

Zeitschrift:
BMC Geriatrics > Ausgabe 1/2017
Autoren:
Daniela C. Moga, Qishan Wu, Pratik Doshi, Amie J. Goodin
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1186/​s12877-017-0690-2) contains supplementary material, which is available to authorized users.

Abstract

Background

To examine factors predicting type of bladder antimuscarinics (BAM) initiated in nursing home (NH) residents.

Methods

Incident BAM initiators following NH admission were identified by constructing a retrospective cohort from Medicare files and Minimum Data Set (MDS). Participants included all residents 65 years and older admitted in Medicare-certified NH between January 1, 2007 and December 31, 2008 who were prescribed BAM and had continuous Medicare (Part A, B, and D) enrollment. Patient characteristics, medications, and comorbidities were derived from Medicare enrollment and claims. NH characteristics and health status were derived from MDS assessments. The outcome was defined as type of BAM initiated after admission (selective, non-selective extended release, non-selective immediate release). Multinomial logistic regression using generalized estimating equation methodology determined which factors predicted the type of BAM initiated.

Results

Twelve thousand eight hundred ninety-nine NH residents initiating BAM therapy were identified; 13.38% of new users were prescribed selective BAM, 45.56% non-selective extended release, and 41.07% non-selective immediate release medications. In both sexes, significant predictors of BAM included region of nursing home, body mass index, cognitive performance score, frailty measures, activities of daily living, and measures of bladder continence. In women, history of fracture and fall-related injuries were significant predictors of type of BAM use, while race and indicators of balance were significant predictors of type of BAM use in men. Non-pharmacological continence management strategies were not predictive of type of BAM initiation.

Conclusions

Several factors are important in predicting type of BAM initiation in both women and men, but other factors are sex-specific. Some observed factors predicting the type of BAM initiated, such as other medications use, body mass index, or provider-related factors are potentially modifiable and could be used in targeted interventions to help optimize BAM use in this population.

Trial registration

Not applicable.
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