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Table 2 Demography of children with GJH and controls for the test rounds in 2012 and 2013

From: The extent and risk of knee injuries in children aged 9–14 with Generalised Joint Hypermobility and knee joint hypermobility - the CHAMPS-study Denmark

  2012 2013
GJH ≥5/9 (n = 108) Controls (n = 1135) GJH ≥5/9 (n = 121) Controls (n = 992)
Participants (no. boys/girls) 40/68 565/569 33/88 502/490
Age (yrs) 11.0 ± 1.3 11.2 ± 1.4 11.9 ± 1.4 12.2 ± 1.3*
Height (cm) 150.4 ± 10.3 152.1 ± 10.8 156.3 ± 10.3 158.1 ± 10.9
Body mass (kg) 40.7 ± 9.7 42.4 ± 10.4 45.8 ± 10.9 47.0 ± 10.9
BMI (kg/m2) 17.7 ± 2.4 18.1 ± 2.6 18.5 ± 2.9 18.5 ± 2.6
School type (no. control/intervention) 43/65 461/673 38/83 362/630
Sports participation units (times/week) 1.8 ± 1.2 1.7 ± 1.2 1.7 ± 1.2 1.7 ± 1.2
  1. GJH = Generalised Joint Hypermobility, BMI = Body Mass Index
  2. Values are the mean ± SD unless otherwise indicated
  3. *Significant difference between groups (p = 0.03 for age)