Variable

Hypofractionation arm

Conventional arm

Frequency

Percentage

Frequency

Percentage

1) Side of the tumour

Right

Left

74

101

42.3

57.5

32

34

48.5

51.5

2) Tumour quadrant

UOQ

Paracentral

UIQ

LOQ

LIQ

140

13

8

8

4

80

7.6

4.6

4.6

2.3

55

5

2

3

1

82

7.5

3

4.5

1.5

3) Tumour status

Tx

T1

T2

T3

T4

6

12

75

50

32

3.4

6.9

42.9

28.6

18.3

3

1

28

23

11

4.5

1.5

42.4

34.8

16.7

4) Nodal status

Nx

N0

N1

N2

N3

5

42

69

40

19

2.9

24

39.4

22.9

10.9

3

15

24

16

8

4.5

22.7

36.4

24.2

12.1

5) Composite stage

I

II

III

Could not be assessed

2

70

95

8

1.1

40

54.3

4.6

-

21

39

6

-

31.8

59.1

9.1

6) Mammogram

BIRADS 2

BIRADS 3

BIRADS 4

BIRADS 5

BIRADS 6

3

5

28

135

4

1.7

2.9

16

77.1

2.3

-

-

16

49

1

-

-

24.2

74.2

1.5

7) Histology

IDC

Metaplastic carcinoma

Papillary carcinoma

Lobular invasive carcinoma

Secretory carcinoma

166

3

4

1

1

95

1.7

2.3

0.6

0.6

63

2

-

1

-

95.5

3

-

1.5

-

8) Tumour grade

1

2

3

5

145

25

2.9

83

14.3

5

52

9

7.5

79

13.6

9) Other characteristics

Lymphovascular space invasion

Perineural invasion

Base of resection positive

Margins positive

19

4

32

17

11

2.3

18.3

9.7

19

4

6

2

11

2.3

9.1

3

10) Receptor status

ER positive

PR positive

HER2-neu positive

80

51

43

45.7

29.1

24.6

23

12

19

34.8

18.2

28.8