Effect of Formalin Fixation on Surgical Margins in Breast Cancer Surgical Specimen

Table 3

Stratification of variables.

Variables	Categories	Mean margin reduction (±S.D.)
Age	≤40 years	2.12 mm ± 2.08 mm
	41–60 years	2.17 mm ± 1.68 mm
	≥61 years	2.11 mm ± 2.18 mm
Type of surgery	Mastectomy	2.21 mm ± 1.91 mm
	Breast conservation surgery	1.60 mm ± 1.50 mm
Type of tumor	Invasive cancer	2.18 mm ± 1.69 mm
	In situ cancer	1.68 mm ± 1.71 mm
Stage	0	1.68 mm ± 1.71 mm
	I	2.56 mm ± 1.9 mm
	II	2.23 mm ± 1.9 mm
	III	1.7 mm ± 1.9 mm
Grade	I	2.3 mm ± 1.7 mm
	II	2.1 mm ± 1.82 mm
	III	2.13 mm ± 2.15 mm