Abstract:
BACKGROUND:polypharmacy is an important risk factor for falls, but recent studies suggest only when including medications associated with increasing the risk of falls. DESIGN:a prospective, population-based cohort study. SUBJECTS:6,666 adults aged ≥50 years from The Irish Longitudinal study on Ageing. METHODS:participants reported regular medication use at baseline. Any subsequent falls, any injurious falls and the number of falls were reported 2 years later. The association between polypharmacy (>4 medications) or fall risk-increasing medications and subsequent falls or injurious falls was assessed using modified Poisson regression. The association with the number of falls was assessed using negative binomial regression. RESULTS:during follow-up, 231 falls per 1,000 person-years were reported. Polypharmacy including antidepressants was associated with a greater risk of any fall (adjusted relative risk (aRR) 1.28, 95% CI 1.06-1.54), of injurious falls (aRR 1.51, 95% CI 1.10-2.07) and a greater number of falls (adjusted incident rate ratio (aIRR) 1.60, 95% CI 1.19-2.15), but antidepressant use without polypharmacy and polypharmacy without antidepressants were not. The use of benzodiazepines was associated with injurious falls when coupled with polypharmacy (aRR 1.40, 95% CI 1.04-1.87), but was associated with a greater number of falls (aIRR 1.32, 95% CI 1.05-1.65), independent of polypharmacy. Other medications assessed, including antihypertensives, diuretics and antipsychotics, were not associated with outcomes. CONCLUSION:in middle-aged and older adults, polypharmacy, including antidepressant or benzodiazepine use, was associated with injurious falls and a greater number of falls.
journal_name
Age Ageingjournal_title
Age and ageingauthors
Richardson K,Bennett K,Kenny RAdoi
10.1093/ageing/afu141subject
Has Abstractpub_date
2015-01-01 00:00:00pages
90-6issue
1eissn
0002-0729issn
1468-2834pii
afu141journal_volume
44pub_type
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