876 / 1674
Whole breast
%
Partial breast
%
P value
Baseline
Grade 0
323
77.8
328
79.0
0.81
Grade 1
85
20.6
81
19.5
Grade 2
4
1.5
5
1.4
Grade 3
2
1
Not graded
1
0
Total
830
415
415
Year 1
Grade 0
132
39.0
154
44.6
0.0001
Grade 1
127
37.6
147
42.6
Grade 2
76
23.4
40
11.6
Grade 3
3
0
Not graded
0
4
Total
683
338
345
Year 2
Grade 0
97
37.0
127
50.2
0.005
Grade 1
124
47.3
106
41.9
Grade 2
40
15.3
20
7.9
Grade 3
0
0
Not graded
1
0
Total
515
262
253
Year 3
Grade 0
79
43.6
75
43.6
0.40
Grade 1
82
45.3
81
47.1
Dyspigmentation
2-3
20
11.0
14
8.1
0
0
Not graded
0
2
Breast dyspigmentation