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Osteoporosis International

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01-10-2021 | Original Article

Higher latitude and lower solar radiation influence on hip fracture admissions in Chilean older population

Authors: J. C. R. Ormeño Illanes, I. Quevedo Langenegger

Published in: Osteoporosis International | Issue 10/2021

Abstract

Summary

Data linking solar radiation with fractures are lacking. We found that lower solar radiation was associated with higher hip fracture admission rates in men from Chile. This supports the idea that solar radiation, a surrogate of vitamin D, may be involved in the development of fractures in older population.

Introduction

To explore the associations between solar radiation and latitude with hip fracture admission rates in people aged 65 years or older in Chile, the country with the greatest variation in solar radiation in the world.

Methods

In this ecological study, we investigated the associations between regional solar radiation and latitude with hospitalizations due to hip fracture in population aged 65 years or older, by reviewing national records between 2013 and 2018. We also evaluated the role of sociodemographic factors such as poverty, education, indigenous ethnicity, and rurality rates.

Results

Between 2013 and 2018, there were 44,328 admissions due to hip fracture in people aged 65 years or older; 77.5% were women and 65.1% were aged 80 years or older. The national admission rate was 389.3 per 100,000 inhabitants (95% CI: 382.4–396.2). The highest admission rate was registered in the Region IX (445.3 per 100,000, 95% CI: 398.3–492.4), which has the highest poverty rates, indigenous ethnicity rates, and rurality rates. We found a north-south increasing gradient of admission rates in men (β=1.5 [95% CI: 0 to 3], p=0.044) and a significant association between solar radiation and admission rates in men (β=−4.4 [95% CI: −8 to 0.8], p=0.02). Admission rates in men were also associated with sociodemographic variables such as poverty (β=2.4 [95% CI: 0 to 4.8], p=0.048) and rurality rates (β=1.2 [95% CI: 0.1 to 2.4], p=0.039).

Conclusion

Regional solar radiation and latitude were associated with hip fracture admission rates in men aged 65 years or older in Chile, with highest admission rates at higher latitudes and lower solar radiation.

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Title: Higher latitude and lower solar radiation influence on hip fracture admissions in Chilean older population
Authors: J. C. R. Ormeño Illanes
I. Quevedo Langenegger
Publication date: 01-10-2021
Publisher: Springer London
Published in: Osteoporosis International / Issue 10/2021
Print ISSN: 0937-941X
Electronic ISSN: 1433-2965
DOI: https://doi.org/10.1007/s00198-021-05910-w

At a glance: The STEP trials

Springer Medicine

Higher latitude and lower solar radiation influence on hip fracture admissions in Chilean older population

Abstract

Summary

Introduction

Methods

Results

Conclusion

At a glance: The STEP trials

Springer Medicine

Abstract

Summary

Introduction

Methods

Results

Conclusion

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