The validity and heritability of self-report osteoarthritis in an Australian older twin sample

Twin Research : the Official Journal of the International Society for Twin Studies
Katherine M KirkNicholas G Martin

Abstract

In order to investigate the genetic and environmental antecedents of osteoarthritis (OA), self-report measures of joint pain, stiffness and swelling were obtained from a population-based sample of 1242 twin pairs over 50 years of age. In order to provide validation for these self-report measures, a subsample of 118 twin pairs were examined according to the American College of Rheumatology clinical and radiographic criteria for the classification of osteoarthritis. A variety of statistical methods were employed to identify the model derived from self-report variables which would provide optimal prediction of these standardised assessments, and structural equation modelling was used to determine the relative influences of genetic and environmental influences on the development of osteoarthritis. Significant genetic effects were found to contribute to osteoarthritis of the hands, hips and knees in women, with heritability estimates ranging from 30-46% depending on the site. In addition, the additive genetic effects contributing to osteoarthritis in various parts of the body were confirmed to be the same. Statistically significant familial aggregation of osteoarthritis in men was also observed, but it was not possible to determine ...Continue Reading

Citations

Jan 15, 2015·Laterality·Yin-Ju LienHui-Chun Tsuang
Mar 21, 2013·Menopause : the Journal of the North American Menopause Society·Rowan T ChlebowskiJean Wactawski-Wende
Jul 25, 2012·Clinical Genetics·C S NielsenÓ A Steingrímsdóttir

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