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. 2023 Dec 19;11(12):e5499. doi: 10.1097/GOX.0000000000005499

Table 4.

Changes in Costal Angular Measurements (11th Rib)

Variable Measurement Median IR Chi Square P
Angular measurements (degrees) Presurgery 170.50 (175–165) 90.0 0.0001
11th rib Im postsurgery 160.50 (165–155)
1month postsurgery 152.50 (157–147)
3 month postsurgery 163.50 (168–158)

Friedman nonparametric test.

IR, interquartile range.

Im, immediate postoperative moment.