Table 1. Clinical and demographic characteristics of the breast cancer patients.

Characteristics	Mean (s.d.)	Range
Age late toxicities (years)a	60.6 (8.57)	27–88
Age radiotherapy (years)b	64.7 (8.59)	31–91
Total radiation dose (Gy)c	61.8 (4.10)	51–71
Follow-up time (months)	51.4 (6.81)	36–77
	Frequency	Percent
Body mass index (kg/m 2)
<25	182	44.5
25–30	161	39.4
>30	66	16.1
Tumor stage status
In situ	36	8.8
1	277	67.7
2	92	22.5
Other or unknown	1	0.2
Lymph node status
0	314	76.8
1	57	13.9
Unknown	38	9.3
Metastasis status
0	261	63.8
1	1	0.2
Unknown	147	35.9
Boost therapy type
Photon	275	67.2
Electron	94	23.0
No boost	40	9.8
Radiotherapy clinic
University of Heidelberg Women's Clinic	228	55.8
Karlsruhe St Vincentius clinic	96	23.5
Karlsruhe City Hospital	60	14.7
University Hospital of Mannheim	25	6.1

^aAge at the time of late toxicities evaluation.

^bAge at the end of radiation therapy.

^cIncludes irradiation to the whole breast and boost application.