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Table 1 Patient characteristics of prepseudarthrosis versus atrophic-type CPT

From: Femoral overgrowth in children with congenital pseudarthrosis of the Tibia

Variables   Prepseudarthrosis Atrophic-type CPT  
   (n = 22) (n = 33) p-value
Age at initial presentation (years)   3.0 (0.1–4.5) 2.6 (0.1–7.3) 0.595a
Sex (Male: Female)   13 : 9 13 : 20 0.152b
Laterality (Right: Left)   9 : 13 15 : 18 0.739b
Neurofibromatosis type 1 (Presence: Absence)   10 : 12 29 : 4 0.001b
Crawford classification (I: II: III: IV)   16 : 6 : 0 : 0 0 : 0 : 3 : 30 <0.001b
Femoral overgrowth At initial presentation 1 : 21 10 : 23 0.019b
(With: Without) At last follow-up 1 : 21 13 : 20 0.004b
  1. CPT congenital pseudarthrosis of the tibia
  2. aIndependent t-test, bFisher’s exact test