Table:
study year
screen arm
control arm
mortality reduction

crmm-lc
nlst
crmm-lc
nlst
crmm-lc
nlst

1
35
31
41
38
-14
-18

2
103
88
127
108
-19
-19

3
175
155
226
191
-22
-19

4
255
239
332
284
-23
-16

5
355
312
449
371
-21
-16

6
469
397
572
487
-18
-18

7
601
467
703
552
-15
-15

8
737
469
834
552
-12
-15

Statement: a maximum mortality reduction of 23% was reached in year four of the crmm-lc.
Question: what was the percentage of a maximum mortality reduction of the crmm-lc?
Answer: [23]