Table 1. Number and proportion of women with BCS, Mastectomy, Mastectomy with reconstruction and loss of reconstruction at initial surgery and yearly for 4 years.

Type of surgery	Number of women at initial surgery	Initial surgery (%)	At 1 year (%)	At 2 years (%)	At 3 years (%)	At 4 years (%)
BCS	39,193	64.3	58.4	58.2	57.9	57.6
Mastectomy alone	18,682	30.6	34.4	32.7	31.6	31.4
Mastectomy with Reconstruction	3,084	5.1	6.8	8.5	9.8	10.3
Loss of Reconstruction	n/a	n/a	0.4	0.6	0.7	0.7