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. 2012 Dec 13;13:247. doi: 10.1186/1471-2474-13-247

Table 3.

Kaplan-Meier survival probability data details

   Year Number of atstart Failures Withdrawn Number of risk Accumulated survival (%) 95% Confidence interval
0 to 1
280
9
3
279.9
96.4
93.8 to 98.4
1 to 2
259
3
24
257.0
95.7
92.4 to 97.6
2 to 3
229
2
40
222.0
94.8
91.4 to 97.0
3 to 4
185
1
48
176.0
94.3
90.7 to 96.6
4 to 5
135
1
53
124.5
93.5
89.9 to 96.1
5 to 6
80
0
43
75.5
98.5
89.9 to 96.1
6 to 7 37 0 29 29.5 93.5 88.8 to 95.3