Geographic Variations in Hip Fracture Incidence in a High-risk Country Stretching into the Arctic: a NOREPOS Study

Overview

Journal Osteoporos Int

Specialties Endocrinology
Orthopedics

Date 2020 Feb 26

PMID 32095840

Citations 11

Authors

L Forsen

A J Sogaard

K Holvik

H E Meyer

T K Omsland

H Stigum

C Dahl

Affiliations

Soon will be listed here.

Abstract

Introduction: To investigate geographic variation in hip fracture incidence within Norway and regional differences in time trends.

Methods: All hip fractures treated in Norwegian hospitals 2002-2013 were included, and demographic information was obtained from Statistics Norway. Age-standardized incidence rates were calculated separately for 19 counties. Incidence rate ratios with 95% confidence intervals for county differences and time trends were estimated using Poisson regression.

Results: Age-standardized number of hip fractures per 10,000 person-years varied between counties from 69 to 84 in women and from 34 to 41 in men. The highest rates were observed in the southeastern capital city of Oslo, while rates were low in the four northernmost counties. There was an east-west gradient, with lower incidence in the coastal southwest compared with the southeast. Women showed a statistically significant decline during 2002-2013 in almost all counties (up to 31%). In men, only a few counties showed a decline. In both genders, hip fracture rates at age 80 in the combined five counties with the highest rates were significantly higher than in the combined five counties with the lowest rates across the period, although the trends converged over time.

Conclusions: In Norway, the hip fracture incidence was lower in the north compared with the south. In addition, we observed an east-west gradient with the highest incidence in the southeast and lower incidence in the coastal southwest. While there has been an overall declining trend in hip fracture incidence over time, regional differences are still apparent.

Citing Articles

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