Table 1 Patients, tumor and treatment characteristics

Age (years old)

Median

70–74

75–79

≥80

44

20

9

60.3

27.4

12.3

Histology

Squamous cell carcinoma

68

93.2

Adenocarcinoma

4

5.5

Small cell carcinoma

1

1.4

Stage

IB

9

12.3

IIA

12

16.4

IIB

32

43.8

IIIA

6

8.2

IIIB

9

12.3

IVA

5

6.8

LNM

Pelvic LNM

7

9.6

Para-aortic LNM

2

2.7

Pelvic and para-aortic LNM

2

2.7

External beam radiation therapy technique

3D–CRT

21

28.8

IMRT

52

71.2

Dose of intracavitary brachytherapy

<30 Gy

19

26.0

30-36 Gy

50

68.5

>36 Gy

4

5.5

Completion of radiotherapy

Yes

70

95.9

No

3

4.1

Duration of radiotherapy

≤8 weeks

58

79.5

>8 weeks

15

20.5

Concurrent chemotherapy

No

49

67.1

1-3 cycles

13

17.8

≥4 cycles

11

15.1