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Table 3 Static and dynamic postoperative NRS in both CPBS and No-CPBS groups. Numeric rating scale (NRS) values are expressed as median and IQR

From: Chronic pain after breast surgery: incidence, associated factors, and impact on quality of life, an observational prospective study

Pain intensity Total (n = 307) No-CPBS (n = 221) CPBS (n = 86) OR [95% CI] p
At 0 h
 NRS at rest 1 [0, 9] 1 [0, 9] 1 [0, 8] 1.13 [1.00–1.28] 0.075
 NRS during movement 1 [0, 10] 1 [0, 10] 2 [0, 9] 1.12 [1.01–1.25] 0.051
At 3 h Total (n = 306) No CPBS (n = 220) CPBS (n = 86)   
 NRS at rest 1 [0, 7] 1 [0, 5] 1 [0, 7] 1.28 [1.02–1.62] 0.034
 NRS during movement 2 [1, 8] 2 [0, 6] 2 [0, 8] 1.31 [1.08–1.59] 0.004
At 6 h Total (n = 292) No CPBS (n = 208) CPBS (n = 84)   
 NRS at rest 1 [0, 5] 1 [0, 5] 1 [0, 5] 1.24 [0.98–1.56] 0.101
 NRS during movement 2 [1, 7] 2 [0, 5] 2 [0, 7] 1.27 [1.06–1.54] 0.041
At 12 h Total (n = 254) No CPBS (n = 180) CPBS (n = 74)   
 NRS at rest 1 [0, 6] 1 [0, 6] 1 [0, 5] 1.26 [0.99–1.58] 0.036
 NRS during movement 2 [0, 7] 2 [0, 6] 2 [0, 7] 1.24 [1.04–1.48] 0.024
At 24 h Total (n = 156) No CPBS (n = 111) CPBS (n = 45)   
 NRS at rest 1 [0, 5] 1 [0, 4] 1 [0, 5] 1.36 [0.98–1.90] 0.110
 NRS during movement 2 [0, 6] 1 [0, 5] 2 [0, 6] 1.35 [1.06–1.71] 0.024
At 48 h Total (n = 58) No CPBS (n = 35) CPBS (n = 23)   
 NRS at rest 1 [0, 4] 1 [0, 4] 1 [0, 2] 0.86 [0.47–1.56] 0.817
 NRS during movement 2 [0, 6] 2 [0, 5] 2 [0, 6] 1.26 [0.90–1.75] 0.279
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