Risk of fracture in neuromyelitis optica spectrum disorder and multiple sclerosis: a nationwide cohort study in South Korea

Osteoporos IntPublished Retrospective cohort study

Study context

Population
Patients with multiple sclerosis (MS) or neuromyelitis optica spectrum disorder (NMOSD) in the Korean National Health Insurance Service (NHIS) database, January 2010 to December 2017matched cohort
Exposure
MS and NMOSD vs matched controls
  • MSn = 1,217
  • NMOSDn = 1,329
Outcome
Risk of fracture (any)
Methodological detailsnationwide, matched controls (age, sex, hypertension, diabetes mellitus, dyslipidemia), Mean follow-up 4.73/4.28 years for matched controls of MS/NMOSD
  • Nationwide
  • Matched controls (age, sex, hypertension, diabetes mellitus, dyslipidemia)
  • Mean follow-up 4.73/4.28 years for matched controls of MS/NMOSD

Main finding

As reported in the abstract

Any fracture · mean follow-up 4.40/4.08 years (MS/NMOSD)
Each group vs controlsAdjusted hazard ratio (95% CI)
MS
1.81(1.43–2.28)
NMOSD
1.85(1.47–2.34)

Observational data: associations, not effects.

Further findings

OutcomeaHR (95% CI)
Hip fractureMSvs Controls3.36 (1.81–6.24)
Hip fractureNMOSDvs Controls3.82 (2.05–7.11)
Vertebral fractureMSvs Controls2.01 (1.42–2.99)
Vertebral fractureNMOSDvs Controls2.84 (1.92–4.21)

Fracture incidence, MS vs NMOSD

No significant differences in fracture incidence between MS and NMOSD

Original publication

Risk of fracture in neuromyelitis optica spectrum disorder and multiple sclerosis: a nationwide cohort study in South Korea. Osteoporos Int. Published 28 February 2023. doi:10.1007/s00198-023-06715-9

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