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Table 1 Comparison of preoperative pulmonary function tests for scoliosis

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

  Cobb FVC FVC ratio FEV1 FEV1 ratio PEF PEF ratio
(deg) (L) (%) (L) (%) (L/min) (%)
Extremely severe 110.917 2.l90 73.149 1.914 73.667 4.699 81.303
Mild and moderate 55.336 2.761 83.471 2.440 87.593 6.592 88.608
t 26.227 −3.817 −4.136 −5.742 −5.476 −0.538 −2.667
P 0.000 0.000 0.000 0.000 0.000 0.591 0.008