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Table 6 Comparison of the pulmonary ventilation function according to the pain level (NRS)

From: Preliminary study of the characteristics of rib fractures and their impact on pulmonary ventilatory function

NRS n VC P FEV1 P PEF P
≤ 3 2 0.67 (0.50–0.83) 0.061 0.62 (0.47–0.72) 0.550 0.29 (0.27–0.30) 0.053
≥ 4 116 0.42 (0.24–0.69)   0.38 (0.20–0.72)   0.18 (0.07–0.70)  
≤ 4 4 0.48 (0.34–0.83) 0.258 0.45 (0.37–0.77) 0.096 0.24 (0.19–0.30) 0.082
≥ 5 114 0.42 (0.24–0.69)   0.38 (0.20–0.72)   0.18 (0.07–0.70)  
≤ 5 7 0.50 (0.34–0.83) 0.048 0.47 (0.37–0.77) 0.040 0.20 (0.15–0.30) 0.134
≥ 6 111 0.41 (0.24–0.69)   0.38 (0.20–0.72)   0.18 (0.07–0.70)  
≤ 6 11 0.50 (0.34–0.83) 0.003 0.47 (0.37–0.77) 0.004 0.20 (0.15–0.34) 0.027
≥ 7 107 0.41 (0.24–0.68)   0.37 (0.20–0.72)   0.18 (0.07–0.70)  
  1. VC vital capacity, FEV1 forced expiratory volume in one second, PEF peak expiratory flow