1218 / 1631
0
0.25
0.5
0.75
1
0
12
24
36
48
60
72
84
96
108
Probability
Time (months)
Progression free survival
(78 months median follow-up)
Hazard ratio, 0.33 (95% CI 0.16 – 0.71)
p = 0.0047
months events
(median) (n)
Observation 92
20
R maint.
nyr
8
Pts at risk
Observ.
51
49
44
38
37
32
25
13
3
R maint.
53
52
49
47
45
43
35
22
5