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Table 5 Incidence Rate Ratio of knee injuries in children with GJH with a fluctuation of ±1 point

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

 

IRR (95 % CI)

P value

IRR (95 % CI)

unadjusted values

P value

GJH ±1 point, group 2a (n = 119)

    

All injuries

0.84 a (0.48 - 1.49)

0.565

0.76 (0.60-0.96)

0.026

Traumatic injuries

1.45 c (0.40 – 5.21)

0.567

1.08 (0.64-1.81)

0.757

Overuse injuries

0.76 b (0.40 - 1.44)

0.404

0.70 (0.54-0.92)

0.010

GJH ±1 point and knee hypermobility, group 2b (n = 56)

    

All injuries

1.10 a (0.61 - 1.94)

0.750

1.09 (0.82-1.44)

0.538

Traumatic injuries

2.18 c (0.63 – 7.52)

0.215

1.35 (0.71-2.56)

0.350

Overuse injuries

0.94 b (0.48 - 1.81)

0.858

1.04 (0.76-1.42)

0.789

  1. Values presented as Incidence Rate Ratios (IRR) adjusted for sex, age, school type, sports participation and growth with 95 % confidence intervals. Poisson regression model. P value indicates main effect of GJH on knee injuries. GJH = Generalised Joint Hypermobility. Groups presented by children with GJH and a fluctuation of ±1 point in the BT score (group 2a) and children with GJH with a fluctuation of ±1 point and simultaneous knee hypermobility in the BT score (group 2b). Unadjusted values represent the association of injury types and GJH only
  2. a = sex, age and sports participation significance, growth borderline significance
  3. b = sex, age, growth and sports participation significance
  4. c = sports participation significance