Table 2. Patient Demographics, Treatment Characteristics, and Breast Cancer Stage.

All patients had margins ≥2 mm and no nodes were involved. All patients received sentinel node or axillary dissection. BF = Barrier Film.

	BF on Lateral (n = 26)	BF on Medial (n = 29)	Total (n = 55)
Patient Characteristics
Mean age (years)	62.7	61.8	62.1
Age range (years)	47-86	45-78	45-86
BMI mean	29.6	31.8	30.7
Treatment Characteristics
Dose mean (Gy)	45.2	45.4	45.4
Fraction mean	19.4	18.9	19.4
Photon Energy	6, 17, 2, 1,	8, 17, 2, 2	14, 34, 4, 3
6, 6/18, 10, 18 (%)	(23.2, 65.3, 7.7, 3.8)	(27.6, 58.6, 6.9, 6.9)	(25.4, 61.8, 7.3, 5.5)
Hormone n(%)	13 (50.0)	13 (44.8)	26 (47.3)
Chemotherapy n(%)	6 (23.1)	3 (10.3)	9 (16.4)
Breast Cancer Stage
Tis	4	7	11
T1	15	14	29
T1mi	0	1	1
T1a	2	0	2
T1b	1	2	3
T1c	2	3	5
T2	1	2	3
T3	1	0	1