Fibromyalgia & musculoskeletal pain

Assessing the Risk for Falls in Older Adults After Initiating Gabapentin Versus Duloxetine

Ann Intern MedPublished Retrospective cohort study

Main finding · Any fall-related visitResult — go to the resultHazard ratio 0.52 95% CI 0.43–0.64

Authors' conclusion

Compared with incident use of duloxetine, incident use of gabapentin was not associated with increased fall-related visits.

Study context

Population
Adults aged 65 years or older with diabetic neuropathy, postherpetic neuralgia or FM, without depression, anxiety, seizures or cancer in the prior 365 days; MarketScan commercial claims, 2014–2021median follow-up 30 days
Participants
57,086 adults
Exposure
Gabapentin initiation vs duloxetine initiation
  • Gabapentinn = 52,152
  • Duloxetinen = 4,934reference
Outcome
Hazard of any fall-related visit after initiation until discontinuation of treatment
Follow-up
6 months
Methodological detailsnew user, active comparator, target trial emulation, stabilized inverse probability of treatment weighting
  • New user, active comparator
  • Target trial emulation
  • Stabilized inverse probability of treatment weighting

Main finding

Any fall-related visit

Hazard ratio

0.52

95% CI 0.43–0.64

Gabapentinvs Duloxetine
HR 0.52 (95% CI 0.43–0.64)

As reported in the abstract

Observational data: associations, not effects.

Secondary outcomes

OutcomeGabapentinDuloxetine
Weighted cumulative incidence of fall-related visit per 1000 person-years at 30, 90 and 180 days103.60, 90.44, and 84.44 per 1000 person-years203.43, 177.73, and 158.21 per 1000 person-years

Severe fall-related events · 6 months

No difference in the hazards of experiencing severe falls

Original publication

Assessing the Risk for Falls in Older Adults After Initiating Gabapentin Versus Duloxetine. Ann Intern Med. Published 7 January 2025. doi:10.7326/annals-24-00636

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