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. 2020 Dec 1;10:20902. doi: 10.1038/s41598-020-78074-y

Table 1.

Patients characteristics (N = 62).

Characteristics EBRT (N) NBT+EBRT (N) p value
Sex 0.758
Male 18 17
Female 13 14
Age (years) 1.095
 ≤ 50 16 14
 > 50 15 17
Location of tumor 0.936
Upper 12 14
Middle 16 12
Lower 3 5
Initial length 0.625
 ≤ 5 cm 18 17
 > 5 cm 13 14
Pathological grade 0.085
I 5 7
II 20 19
III 6 5
Initial clinical stage 0.785
II 14 12
III 17 19
Initial ECOG-PS 0.634
0–1 20 19
2 11 12
3 0 0
Initial radiation dose(GY) 0.082
 ≥ 60 Gy 28 29
 < 60 Gy 3 2
RFS 0.093
 ≥ 12 months 19 20
 < 12 months 12 11

EBRT external beam radiotherapy, ECOG-PS Eastern Cooperative Oncology Group performance status, NBT neutron intraluminal brachytherapy, RFS recurrence-free survival.