Table 3 Adjusted^a odds ratio of re-excision estimates^b for stage I, II and III breast cancer patients whose initial surgery was BCS

Total Patients

3476

1840

343

Age at Diagnosis

P < 0.001

P = 0.43

P = 0.32

  < 50

1.00

1.00

1.00

 50-59

0.68 (0.54, 0.87)

1.07 (0.80, 1.41)

1.06 (0.57, 1.97)

 60-69

0.58 (0.44, 0.75)

1.09 (0.80, 1.49)

0.84 (0.39, 1.80)

 70-79

0.56 (0.42, 0.76)

0.85 (0.56, 1.29)

0.68 (0.24, 1.90)

 80+

0.35 (0.21, 0.60)

0.67 (0.37, 1.20)

0.21 (0.04, 1.22)

Geography of Surgery

P = 0.004

P = 0.04

P = 0.09

 Calgary

1.00

1.00

1.00

 Edmonton

1.74 (1.18, 2.57)

1.64 (1.09, 2.45)

2.14 (1.07, 4.29)

 Central

2.26 (1.27, 4.03)

1.62 (0.86, 3.05)

4.13 (1.07, 15.9)

 South

1.74 (1.00, 3.04)

1.55 (0.87, 2.75)

2.13 (0.77, 5.89)

 North

2.89 (1.47, 5.68)

2.58 (1.34, 4.97)

3.79 (0.94, 15.3)

Surgeon Volume

P = 0.80

P = 0.95

P = 0.16

 Very High (60+)

1.00

1.00

1.00

 High (20-59)

0.96 (0.63, 1.45)

0.99 (0.65, 1.51)

1.40 (0.69, 2.83)

 Medium (13-19)

0.96 (0.58, 1.60)

1.16 (0.67, 2.00)

1.88 (0.71, 5.01)

 Low (5-12)

0.83 (0.42, 1.66)

1.22 (0.59, 2.50)

0.24 (0.04, 1.55)

 Very Low (< 5)

0.51 (0.16, 1.62)

1.26 (0.45, 3.54)

1.62 (0.18, 14.2)

Year of Diagnosis

P = 0.42

P = 0.18

P = 0.27

 2002-2005

1.00

1.00

1.00

 2006-2009

1.08 (0.89, 1.32)

0.85 (0.67, 1.07)

0.74 (0.43, 1.26)

Tumor Size

P < 0.001

P < 0.001

 T0/T1

1.00

1.00

1.00

 T2

–

1.39 (1.04, 1.86)

1.40 (0.15, 12.8)

 T3

–

6.33 (2.82, 14.2)

1.33 (0.12, 14.2)

 T4

–

–

1.83 (0.17, 19.9)

Nodal Status

P < 0.001

P = 0.75

 N0

1.00

1.00

1.00

 N1

–

1.74 (1.30, 2.33)

1.40 (0.15, 12.8)

 N2

–

–

1.33 (0.12, 14.2)

 N3

–

–

1.83 (0.17, 19.9)

 Hospital

0 (−)

0 (−)

0.15 (0.00, 9.09)

 Surgeon

0.43 (0.30, 0.62)

0.39 (0.25, 0.61)

0 (−)