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Table 4 Length of stay and numeric rating scale of pain

From: Using an incentive spirometer reduces pulmonary complications in patients with traumatic rib fractures: a randomized controlled trial

 Whole cohort
N = 50
Control
n = 26
Study
n = 24
χ2 / tp value
Length of stay (days)9.98 ± 3.939.92 ± 4.1010.04 ± 3.820.313.578
NRS
 1st day4.34 ± 1.414.23 ± 1.454.46 ± 1.380.567.361
 2nd day3.26 ± 1.383.38 ± 1.703.13 ± 0.950.660.663
 5th day2.87 ± 1.333.00 ± 1.482.73 ± 1.170.686.634
  1. NRS numeric rating scale