Table 1 Clinical and demographic characteristics of the breast cancer patients

From: Genetic polymorphisms in DNA repair and damage response genes and late normal tissue complications of radiotherapy for breast cancer

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/m2)

  

 <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

  1. aAge at the time of late toxicities evaluation.
  2. bAge at the end of radiation therapy.
  3. cIncludes irradiation to the whole breast and boost application.