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Table 4 Correlation between the transthoracic procedure and postoperative pulmonary complications

From: The role of preoperative pulmonary function tests in the surgical treatment of extremely severe scoliosis

  Pulmonary complication Total
Yes No  
Transthoracic 6 27 33
Non-transthoracic 3 24 27
Total 9 51 60
  1. χ2 = 0.160, P = 0.689, OR = 1.78, 95% CI = 0.40–7.90.