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. Author manuscript; available in PMC: 2013 Dec 1.
Published in final edited form as: J Pain. 2012 Dec;13(12):1172–1187. doi: 10.1016/j.jpain.2012.09.013

Table 6.

Differences in Intraoperative Characteristics Among the Breast Pain Classes

Characteristic No Pain (0) n=126 (31.7%) Mild Pain (1) n=173 (43.4%) Moderate Pain (2) n=53 (13.3%) Severe Pain (3) n=46 (11.6%) Statistics

Mean (SD) Mean (SD) Mean (SD) Mean (SD)

Number of lymph nodes removed 4.3 (4.7) 6.0 (7.1) 6.7 (6.4) 8.1 (9.0) F=4.13, p=.007
0 < 3

Number of positive lymph nodes 0.7 (1.8) 0.8 (2.0) 1.1 (3.3) 1.4 (2.9) NS

Number of drains placed during surgery 0.4 (0.7) 0.5 (0.7) 0.6 (0.9) 0.5 (0.6) NS
% (N) % (N) % (N) % (N)

Type of surgery NS
 Breast conserving 84.1 (106) 77.5 (134) 75.5 (40) 82.6 (38)
 Mastectomy 15.9 (20) 22.5 (39) 24.5 (13) 17.4 (8)

Location of cancer NS
 Right breast 47.6 (60) 46.8 (81) 49.1 (26) 45.7 (21)
 Left breast 52.4 (66) 53.2 (92) 50.9 (27) 54.3 (25)

Surgery done on NS
 Dominant side 47.6 (60) 46.8 (81) 50.9 (27) 41.3 (19)
 Nondominant side 52.4 (66) 53.2 (92) 49.1 (26) 58.7 (27)

Sentinal lymph node biopsy NS
 Yes 84.1 (106) 82.7 (143) 86.8 (46) 71.7 (33)
 No 15.9 (20) 17.3 (30) 13.2 (7) 28.3 (13)

Axillary lymph node dissection χ2=8.20, p=.042
0 < 3
 Yes 29.4 (37) 38.4 (66) 41.5 (22) 52.2 (24)
 No 70.6 (89) 61.6 (106) 58.5 (31) 47.8 (22)

Intercostobrachial nerve sacrificed NS
 Yes 0.8 (1) 4.0 (7) 5.7 (3) 4.3 (2)
 No 10.4 (13) 10.4 (18) 7.5 (4) 10.9 (5)
 Unable to determine 88.8 (111) 85.5 (148) 86.8 (46) 84.8 (39)

Intraoperative wound infiltration with local anesthetic NS
 Yes 66.7 (84) 60.1 (104) 64.2 (34) 58.7 (27)
 No 10.3 (13) 11.0 (19) 11.3 (6) 8.7 (4)
 Unable to determine 23.0 (29) 28.9 (50) 24.5 (13) 32.6 (15)

Intraoperative radiation therapy NS
 Yes 2.4 (3) 4.1 (7) 7.5 (4) 2.2 (1)
 No 97.6 (123) 95.9 (165) 92.5 (49) 97.8 (45)

Reconstruction at the time of surgery χ2=10.31, p=.016
no significant pairwise contrasts
 Yes 15.9 (20) 29.1 (50) 18.9 (10) 13.0 (6)
 No 84.1 (106) 70.9 (122) 81.1 (43) 87.0 (40)

Abbreviations: NS = Not significant, SD = standard deviation