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Table 1 Demographic data and postoperative outcomes

From: Thoracic paravertebral block reduced the incidence of chronic postoperative pain for more than 1 year after breast cancer surgery

  Chronic pain (n = 17) No chronic pain (n = 29) p value
Age (years) 55.7 ± 11.7 57.4 ± 12.4 0.78
Height (cm) 156.2 ± 6.9 155.3 ± 6.0 0.60
Body weight (kg) 56.8 ± 10.9 55.7 ± 9.1 0.82
Body mass index 23.3 ± 4.0 23.1 ± 3.1 0.97
Type of surgery
 Lumpectomy 10 13 0.38
 Mastectomy 7 16  
No. of axillary lymph nodes removed 4 5 0.71
Treatment received
 Surgery alone 16 26  
 Surgery + radiation 0 1 1
 Surgery + chemotherapy 0 1  
 Surgery + radiation + chemotherapy 1 1  
Postsurgery (months) 15.2 ± 1.4 14.7 ± 1.3 0.18
No. of perioperative thoracic paravertebral nerve blocks 5 18 0.039
Postsurgery acute pain (<24 h)    
Severe 2 (11.8 %) 0 (0 %)  
Moderate 6 (35.3 %) 9 (31.0 %) 0.33
Mild 5 (29.4 %) 11 (37.9 %)  
None 4 (23.5 %) 9 (31.0 %)  
Incidence of rescue analgesics 1 [0–4] 0 [0–3] 0.23
No. of cancer recurrence 0 0 1
  1. Data are shown as mean ± SD or median [range]