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Table 3 Comparison of the clinical characteristics based on a grouping by 30°

From: A retrospective study on the impact of bar flipping on the recurrence of pectus excavatum after the Nuss procedure

  α ≤ 30° (n = 336) α > 30° (n = 23) p-value
Age at Nuss repair, years (mean ± SD) 23.8 ± 7.8 25 ± 6.8 0.409
Sex, n (%)    0.754
 Male 284 (85%) 20 (87%)  
 Female 52 (15%) 3 (13%)  
Flipping angle, degrees (mean ± SD) 12.8 ± 6.3 40.4 ± 5.8  < 0.001
Body weight, kg (mean ± SD) 57.6 ± 10.7 63.6 ± 11.5 0.01
Haller index, (mean ± SD) 4 ± 0.9 4.4 ± 1.8 0.018
Observation period, years (mean ± SD) 2.2 ± 1.3 1.9 ± 1.6 0.405
BarN, n (%)    0.641
 1 33 (10%) 2 (9%)  
 2 269 (80%) 20 (87%)  
 3 34 (10%) 1 (4%)  
Scoliosis, n, (%)    0.596
 Yes 316 (94%) 21 (91%)  
 No 20 (6%) 2 (9%)  
Symmetry n, (%)    0.593
 Yes 156 (46%) 12 (52%)  
 No 180 (54%) 11 (48%)  
  1. BarN: the number of inserted bars in each patient
  2. p < 0.05 are given in bold