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1492 Sociodemographic Factors Influence the Risk for Femur Shaft Fractures in Children: A Swedish Case-Control Study From 1997–2005
  1. J von Heideken1,
  2. T Svensson2,
  3. M Iversen3,4,
  4. P Blomqvist2,
  5. Y Haglund-Åkerlind1,
  6. PM Janarv1
  1. 1Department of Women’s and Children’s Health
  2. 2Department of Medicine, Solna, Clinical Epidemiology Unit, Karolinska Institutet, Stockholm, Sweden
  3. 3Department of Physical Therapy, Northeastern University
  4. 4Division of Rheumatology, Immunology and Allergy, Brigham and Women’s Hospital, Boston, MA, USA

Abstract

Objectives To investigate gender and age differences in sociodemographic risk factors and their relationship with femur shaft fractures and injury mechanisms in children.

Methods Population based case-control study. Swedish children (N=1,874), aged 0–14 years, with a femur shaft fracture diagnostic code between 1987–2005 were compared to matched controls (N=18,740). Data were based on record linkage between six Swedish registers. Adjusted Odds Ratios were calculated.

Results Parental age < 25 years old increased the risk (25%) for fracture, compared to parents with an average age of 25–37 years. When stratifying for gender and age group, the risk (40%) was only seen in older boys, 7–14 years of age. If parents’ total income was among the 25th percentile, the risk (20%) increased, compared to parents with an income in the 50th percentile. The risk (50%) was only seen in older girls living in low-income households. Children with at least one university-educated parent reduced their fracture risk (15%), compared to children whose parents had 10–12 years of education, but this decrease could not be linked to gender and age group.

Family composition, number of siblings, birth order or receiving social welfare did not influence the fracture risk.

Regarding the cause of injury none of the sociodemographic variables influenced the risk equal for boys and girls.

Conclusions Sociodemographic differences related to femur shaft fracture rate and cause of injury differ between boys and girls in different age groups. This have implications for parental counselling.

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