Table 1.

Comparison of Patient Characteristics in Women Undergoing Tissue Expander/Implant-Based Reconstruction.

Group	Age at Reconstruction (years)	Right Implant Volume (mL)	Left Implant Volume (mL)	% Change in Right Breast Volume	% Change in Left Breast Volume
Nipple-sparing mastectomy
N	63	63	63	63	63
Mean	48	607	607	.66	.66
Median	48	560	560	.63	.63
Standard deviation	10.77	156	156	.51	.51
Minimum	27	325	325	-.15	-.15
Maximum	66	900	900	1.93	1.93
Skin-sparing mastectomy
N	166	157	150	136	138
Mean	54	579	620	.25	.25
Median	55	600	640	.15	.18
Standard deviation	12.15	203	166	.62	.59
Minimum	23	120	120	-1.0	-1.0
Maximum	82	1100	1100	3.11	3.24
Previous augmentation and mastectomy
N	64	53	50	48	48
Mean	51	551	551	.81	.72
Median	51	550	575	.75	.76
Standard deviation	11.16	145	152	.54	.61