115 / 1498
5 years
Number of patients at risk
167
155
139
128
104
67
28
9
167
161
150
141
124
86
44
13
Rituximab maintenance 74.3%
Observation 64.7%
0
1
2
3
4
5
6
7
8
HR = 0.70
p
= 0.07
100
80
60
40
20
0
Time (years)
Overall survival (%)
Rituximab maintenance vs observation in relapsed FL
(EORTC 20981): Overall survival