Table 1. Patient characteristics.

		Preoperative	Postoperative
Age	<40 years	6	4
	>40 years	19	25
Medical history of VTE*		1	2
Stage	IA or IB	1, p=0.016	10
	IIA	9	9
	IIB	5	4
	IIIA	5	2
	IIIB or IIIC	5	4
Grade	I	1	0
	II	9	10
	III	12	18
	Unknown	3	1
Tumor size	<2 cm	0, p=0.0002	12
	2-5cm	12	15
	>5 cm	13, p=0.0001	2
Number of lymph nodes involved	0	7	12
	1-3	11	13
	4-9	5	3
	10+	2	1
Estrogen receptor (ER)	Negative	10	13
	Positive	15	16
Progesterone receptor (PR)	Negative	11	11
	Positive	14	18
Triple negative breast cancer		6	9
Adriamycin and cyclophosphamide	Given every 3 weeks	11	7
	Given every 2 weeks (dose dense)	14	18
	Not given	0	4
Taxane base chemotherapy	Not given	1	7
	Paclitaxel weekly for 12 weeks	18	14
	Paclitaxel every 2 weeks (dose dense)	2	8
	Paclitaxel weekly with carboplatin	4	0
	Docetaxel-carboplatin-Trastuzumab	0	4
Operation	Lumpectomy+SLNB**	3	8
	Lumpectomy+ALND***	13	9
	Mastectomy+SLNB	0	4
	Mastectomy+ALND	7	8
Trastuzumab	No	17	22
	Yes	8	7

Notes: * Venous-thrombus event.

** Sentinel lymph node biopsy.

*** Axillary lymph node dissection.