Table 3.

Life table analysis for the uncemented ABG I prosthesis with revision of the femoral component as the end point

Years since operation	Number at start	Number revised	Withdrawn	Death	Loss to followup	Number at risk	Annual failure rate (%)	Annual success rate (%)	Survival rate (%)	95% confidence interval
0–1	69	0	0	0	0	69	0	100.0	100.0	94.7–100.0
1–2	69	0	0	0	0	69	0	100.0	100.0	94.7–100.0
2–3	69	0	0	0	0	69	0	100.0	100.0	94.7–100.0
3–4	69	0	0	0	0	69	0	100.0	100.0	94.7–100.0
4–5	69	0	0	0	0	69	0	100.0	100.0	94.7–100.0
5–6	69	0	0	0	0	69	0	100.0	100.0	94.7–100.0
6–7	69	0	0	0	0	69	0	100.0	100.0	94.7–100.0
7–8	69	0	0	0	0	69	0	100.0	100.0	94.7–100.0
8–9	69	0	0	0	0	69	0	100.0	100.0	94.7–100.0
9–10	69	0	0	0	0	69	0	100.0	100.0	94.7–100.0
10–11	69	1	0	0	0	69	1.4	98.6	98.6	92.3–100.0
11–12	68	0	0	0	0	68	0	100.0	98.6	92.2–100.0
12–13	68	0	0	0	0	68	0	100.0	98.6	92.2–100.0
13–14	68	0	21	0	0	57.5	0	100.0	98.6	91.3–100.0
14–15	47	0	12	1	0	40.5	0	100.0	98.6	88.8–100.0
15–16	34	1	11	0	0	28.5	3.5	96.5	95.1	80.1–100.0
16–17	22	0	7	1	0	18	0	100.0	95.1	74.4–100.0