Key result
Cognitive impairment was associated with a lower overall reoperation rate after hip fracture surgery compared to cognitively fit patients (4.7% vs. 8.9%, HRR 0.71).
Why the study?
About one-fourth of hip fracture patients have cognitive impairment, prompting investigation into whether cognitive function affects surgical treatment, risk of reoperation, and mortality.
Does cognitive impairment affect the risk of reoperation and mortality after hip fracture surgery?
Population
87,573 hip fractures reported to the Norwegian Hip Fracture Register in 2005-2017
Comparison
Cognitive impairment vs no cognitive impairment
Design
Prospective cohort study
Authors
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Cognitive impairment was associated with procedure-specific reoperation risks and higher mortality; leaves open whether tailored surgical choices improve outcomes.
Cohort (n=87,573)
Yes
Does cognitive impairment affect the risk of reoperation and mortality after hip fracture surgery?
Hazard Ratio: 0.71 (95% CI 0.66–0.76)
Absolute Event Rate: 4.7% vs 8.9%
Cognitively impaired hip fracture patients have a lower overall reoperation rate but higher 1-year mortality, with specific increased risks for dislocation and periprosthetic fracture after certain procedures.
Kristoffersen et al. (2020) conducted a cohort in Hip fracture (n=87,573). Cognitive impairment vs. No cognitive impairment was evaluated on Overall reoperation rate (HRR 0.71, 95% CI 0.66-0.76). Cognitive impairment was associated with a lower overall reoperation rate after hip fracture surgery compared to cognitively fit patients (4.7% vs. 8.9%, HRR 0.71).
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