rownames,survive,cases,age,sex,class
1,1,1,0,0,1
2,13,13,0,0,2
3,14,31,0,0,3
4,5,5,0,1,1
5,11,11,0,1,2
6,13,48,0,1,3
7,140,144,1,0,1
8,80,93,1,0,2
9,76,165,1,0,3
10,57,175,1,1,1
11,14,168,1,1,2
12,75,462,1,1,3