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Development and validation of a disease model for postmenopausal osteoporosis

Development and validation of a disease model for postmenopausal osteoporosis
Development and validation of a disease model for postmenopausal osteoporosis
Summary: This article describes the development of a model for postmenopausal osteoporosis (PMO) based on Swedish data that is easily adaptable to other countries.

Introduction: The aims of the study were to develop and validate a model to describe the current/future burden of PMO in different national settings.

Methods: For validation purposes, the model was developed using Swedish data and provides estimates from 1990. For each year of the study, the “incident cohort” (women experiencing a first osteoporotic fracture) was identified and run through a Markov model using 1-year cycles until 2020. Health states were based on the number of fractures and death. Fracture by site (hip, vertebral, and non-hip non-vertebral) was tracked for each health state. Transition probabilities reflected site-specific risk of death and subsequent fractures. Bone mineral density (BMD) was included as a model output; model inputs included population size and life tables from 1970 to 2020, incidence of fracture, relative risk of subsequent fractures based on prior fracture, relative risk of death following a fracture by site, and BMD by age (mean and standard deviation).

Results: Model predictions averaged across age groups estimated the incidence of hip, vertebral, and other osteoporotic fractures within a 5% margin of error versus published data. In Sweden, the number of osteoporotic fractures is expected to rise by 11.5% between 2009 and 2020, with a shift towards more vertebral fractures and multiple fractures.

Conclusion: The current PMO disease model is easily adaptable to other countries, providing a consistent measure of present and future burden of PMO in different settings.
bone mineral density, epidemiology, fracture, osteoporosis, t-score
0937-941X
771-780
Gauthier, A.
eaf7c1cd-495d-4352-bb14-d431c9241fcf
Kanis, J.A.
8da04a36-08a7-4310-b4b4-a6d432439587
Martin, M.
51030542-f483-42b7-b267-e9c965c1d6ba
Compston, J.
b64c0d0e-97dd-44c8-97ba-f756f0bc966d
Borgstrom, F.
c8fa813a-a664-4de4-bbc5-4ab1ca92ef55
Cooper, C.
e05f5612-b493-4273-9b71-9e0ce32bdad6
McCloskey, E.
5211de37-303a-42f8-b24b-00c475264f78
Gauthier, A.
eaf7c1cd-495d-4352-bb14-d431c9241fcf
Kanis, J.A.
8da04a36-08a7-4310-b4b4-a6d432439587
Martin, M.
51030542-f483-42b7-b267-e9c965c1d6ba
Compston, J.
b64c0d0e-97dd-44c8-97ba-f756f0bc966d
Borgstrom, F.
c8fa813a-a664-4de4-bbc5-4ab1ca92ef55
Cooper, C.
e05f5612-b493-4273-9b71-9e0ce32bdad6
McCloskey, E.
5211de37-303a-42f8-b24b-00c475264f78

Gauthier, A., Kanis, J.A., Martin, M., Compston, J., Borgstrom, F., Cooper, C. and McCloskey, E. (2011) Development and validation of a disease model for postmenopausal osteoporosis. Osteoporosis International, 22 (3), 771-780. (doi:10.1007/s00198-010-1358-3). (PMID:20700580)

Record type: Article

Abstract

Summary: This article describes the development of a model for postmenopausal osteoporosis (PMO) based on Swedish data that is easily adaptable to other countries.

Introduction: The aims of the study were to develop and validate a model to describe the current/future burden of PMO in different national settings.

Methods: For validation purposes, the model was developed using Swedish data and provides estimates from 1990. For each year of the study, the “incident cohort” (women experiencing a first osteoporotic fracture) was identified and run through a Markov model using 1-year cycles until 2020. Health states were based on the number of fractures and death. Fracture by site (hip, vertebral, and non-hip non-vertebral) was tracked for each health state. Transition probabilities reflected site-specific risk of death and subsequent fractures. Bone mineral density (BMD) was included as a model output; model inputs included population size and life tables from 1970 to 2020, incidence of fracture, relative risk of subsequent fractures based on prior fracture, relative risk of death following a fracture by site, and BMD by age (mean and standard deviation).

Results: Model predictions averaged across age groups estimated the incidence of hip, vertebral, and other osteoporotic fractures within a 5% margin of error versus published data. In Sweden, the number of osteoporotic fractures is expected to rise by 11.5% between 2009 and 2020, with a shift towards more vertebral fractures and multiple fractures.

Conclusion: The current PMO disease model is easily adaptable to other countries, providing a consistent measure of present and future burden of PMO in different settings.

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More information

Published date: March 2011
Keywords: bone mineral density, epidemiology, fracture, osteoporosis, t-score

Identifiers

Local EPrints ID: 175921
URI: http://eprints.soton.ac.uk/id/eprint/175921
ISSN: 0937-941X
PURE UUID: 916c08be-83fd-40f1-9d20-e1c64fef4b96
ORCID for C. Cooper: ORCID iD orcid.org/0000-0003-3510-0709

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Date deposited: 01 Mar 2011 10:26
Last modified: 18 Mar 2024 02:45

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Contributors

Author: A. Gauthier
Author: J.A. Kanis
Author: M. Martin
Author: J. Compston
Author: F. Borgstrom
Author: C. Cooper ORCID iD
Author: E. McCloskey

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