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Table 2 Survivorship estimates and numbers at risk for the ADVANCE group

From: Long-term survivorship of a medial-pivot total knee system compared with other cemented designs in an arthroplasty registry

Year Survivorship (%) Lower 95 % CI Upper 95 % CI N Revisions N Deaths N At Risk
0 100.0 100.0 100.0 1 7 506
1 99.2 98.4 100.0 5 4 494
2 98.1 96.9 99.3 5 7 459
3 97.6 96.3 99.0 2 10 424
4 97.2 95.6 98.7 0 8 397
5 96.6 94.9 98.3 2 9 367
6 96.6 94.9 98.3 0 10 334
7 96.3 94.5 98.1 1 16 290
8 96.3 94.5 98.1 0 12 230
9 96.3 94.5 98.1 0 12 173
10 96.3 94.5 98.1 0 4 113
11 96.3 94.5 98.1 0 1 58
12 96.3 94.5 98.1 0 0 18
13 96.3 94.5 98.1 0 0 1