472 / 1778
RT
no RT
Logrank
N
354
360
F
15
50
P <.001
RT
no RT
At risk:
354
360
284
276
199
209
48
42
RT
no RT
0
10
20
30
years
0
5
10
15
Treatment arm
I
II
III
ND
Logrank
N
395
88
86
145
F
28
9
15
13
P =0.006
I
II
III
ND
At risk:
395
88
86
145
323
74
52
111
242
49
39
78
64
9
5
12
I
II
III
ND
0
10
20
30
years
0
5
10
15
FIGO review grade
<1/2
>1/2
Logrank
N
294
420
F
19
46
P =0.04
<1/2
>1/2
At risk:
294
420
233
327
179
229
39
51
<1/2
>1/2
0
10
20
30
years
0
5
10
15
Invasion
<60
60-70
>70
Logrank
N
200
271
243
F
8
27
30
P =0.003
<60
60-70
>70
At risk:
200
271
243
182
211
167
146
165
97
32
41
17
<60
60-70
>70
0
10
20
30
years
0
5
10
15
Age
PORTEC Locoregional relapse
Creutzberg et al, ASTRO 2009, IJROBP 2011
PORTEC-1: risk factors for locoregional relapse