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Table 2 Subgroup analysis according to subintervals of non-working hours

From: Is there an optimal timing for surgical treatment of pediatric supracondylar humerus fractures in the first 24 hours?

  08.00-17.00 (n=79) 17.00-24.00 (n=51) p value 08.00-17.00 (n=79) 24.00-08.00 (n=20) p value
Open reduction 25/79 (31.6%) 12/51 (23.5%) 0.313 25/79 (31.6%) 8/20 (40.0%) 0.484
Mean operative duration (minutes) 64.7 ± 35.2 61.3 ± 36.9 0.394 64.7 ± 35.2 52.7 ± 19.2 0.165
Reduction parameters on early postoperative radiographs       
Lateral capitellohumeral within normal limits 70/79 (88.6%) 47/51 (92.2%) 0.504 70/79 (88.6%) 19/20 (95.0%) 0.357
Baumann angle within normal limits 74/79 (93.7%) 48/51 (94.1%) 0.614 74/79 (93.7%) 19/20 (95.0%) 0.650
Anterior humeral line    0.573    0.932
Excellent 18/79 (22.8%) 8/51 (15.7%)   18/79 (22.8%) 4/20 (20.0%)  
Acceptable
Poor
56/79 (70.9%)
5/79 (6.3%)
40/51 (78.4%)
3/51 (5.9%)
  56/79 (70.9%)
5/79 (6.3%)
15/20 (75.0%)
1/20 (5.0%)