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Table 1 Forced Vital Capacity (FVC) in three times of evaluation according to the age (≤10 years and >10 years), age of onset of steroid therapy (≤7 years and >7 years), and walking capacity (ambulant and non-ambulant)

From: Lung function monitoring in patients with duchenne muscular dystrophy on steroid therapy

   FVC (L/%)   
  Evaluation I Evaluation II Evaluation III  
Age (≤10 years) 1.6 ± 0.3/ 1.7 ± 0.4/ 1.7 ± 0.4/ p1 = 0.24/0.59
n = 9 78.8 ± 12.5 80.1 ± 16.6 75.2 ± 20.2 p2 = 0.07/0.31
Age (>10 years) 1.7 ± 0.4/ 1.8 ± 0.4/ 1.7 ± 0.4/ p3 = 0.19/0.09
n = 12 66 ± 22.1 65.5 ± 24.7 60.5 ± 23.6  
Age of onset of steroid therapy (≤7 years) 1.6 ± 0.3 / 75.9 ± 16.3 1.7 ± 0.5 / 78.5 ± 22.5 1.7 ± 0.4 / 74.7 ± 25.5 p1 = 0.24/0.61
     p2 = 0.05/0.25
     p3 = 0.21/0.23
n = 10     
Age of onset of steroid 1.7 ± 0.4 / 66.9 ± 21.3 1.8 ± 0.4 / 66.1 ± 21.7 1.7 ± 0.3 / 59.6 ± 18.5  
therapy (>7 years)     
n = 11     
Ambulant 1.7 ± 0.4 / 86.2 ± 10.6 1.9 ± 0.4 / 92.3 ± 11.5 1.9 ± 0.3 / 87.2 ± 15.6 p1 = 0.37/0.65
     p2 = 0.41/0.99
n = 9     p3 = 0.83/0.67
Non-ambulant 1.6 ± 0.4 / 60 ± 16.3 1.6 ± 0.4 /56.7 ± 15.1 1.5 ± 0.3 / 51.5 ± 13.3  
n = 12     
  1. Table legend: p1 = comparison between the three evaluations, p2 = comparison between both groups, p3 = interaction effect.