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Incidence of Perthes disease in children born between 1973 and 1993: A Swedish nationwide cohort study of 2.1 million individuals
Linköping University, Department of Clinical and Experimental Medicine, Division of Clinical Sciences. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Center for Surgery, Orthopaedics and Cancer Treatment, Department of Orthopaedics in Linköping. Department Orthopaed, Sweden.
Linköping University, Department of Clinical and Experimental Medicine. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Center for Surgery, Orthopaedics and Cancer Treatment, Department of Orthopaedics in Norrköping.
Linköping University, Department of Clinical and Experimental Medicine, Division of Children's and Women's health. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Center of Paediatrics and Gynaecology and Obstetrics, Department of Gynaecology and Obstetrics in Linköping.
Region Östergötland, Center of Paediatrics and Gynaecology and Obstetrics, Department of Gynaecology and Obstetrics in Linköping. Linköping University, Department of Clinical and Experimental Medicine, Division of Children's and Women's health. Linköping University, Faculty of Medicine and Health Sciences.
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2017 (English)In: Acta Orthopaedica, ISSN 1745-3674, E-ISSN 1745-3682, Vol. 88, no 1, p. 96-100Article in journal (Refereed) Published
Abstract [en]

Background and purpose - The incidence of Perthes disease as reported in the literature varies widely between and within countries. The etiology of the disease is still unknown. Both environmental and genetic factors have been suggested to play a part in either causing the disease or increasing the susceptibility of an individual. We determined the incidence of Perthes disease in Sweden and investigated possible relationships to parental socioeconomic status, ethnicity, marital status, mothers age when giving birth, parity, number of siblings, and smoking habits. Patients and methods - Six Swedish population-based registers were used, together covering all children born in Sweden from 1973 through 1993. Results - The incidence of Perthes disease in Sweden was 9.3 per 100,000 subjects. The ratio between boys and girls was 3.1:1. The educational level of the father and the mother of a child with Perthes disease was lower than in the controls. The incidence was lower when the fathers were in the highest income bracket (above the 90(th) percentile). A higher proportion of parents of Nordic lineage had children with Perthes disease than parental pairs with one or both who were not of such lineage. Interpretation - This study confirms that there is an association between the incidence of Perthes disease and the socioeconomic status of the parents.

Place, publisher, year, edition, pages
TAYLOR & FRANCIS LTD , 2017. Vol. 88, no 1, p. 96-100
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URN: urn:nbn:se:liu:diva-134798DOI: 10.1080/17453674.2016.1227055ISI: 000392736200016PubMedID: 27587239OAI: oai:DiVA.org:liu-134798DiVA, id: diva2:1077042
Available from: 2017-02-24 Created: 2017-02-24 Last updated: 2018-05-02

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Johansson, TorstenLindblad, MariaBladh, MarieJosefsson, AnnSydsjö, Gunilla
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Division of Clinical SciencesFaculty of Medicine and Health SciencesDepartment of Orthopaedics in LinköpingDepartment of Clinical and Experimental MedicineDepartment of Orthopaedics in NorrköpingDivision of Children's and Women's healthDepartment of Gynaecology and Obstetrics in Linköping
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