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| Year | Number of atstart | Failures | Withdrawn | Number of risk | Accumulated survival (%) | 95% Confidence interval | 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 |