TABLE 4.

Life‐table survival analysis showing the cumulative survival rate of the single crowns

Interval start time (years)	Number entering interval	Number withdrawing during interval	Number exposed to risk	Single crown failures	Survival rate within each interval (%)	Cumulative proportion surviving at end of interval (%)	Standard error (%)
0	1037	26	1024.0	10	99.0	99.0	0.3
1	1001	43	979.5	18	98.2	97.2	0.5
2	940	47	916.5	14	98.5	95.7	0.6
3	879	29	864.5	17	98.0	93.8	0.8
4	833	21	822.5	16	98.1	92.0	0.9
5	796	58	767.0	18	97.7	89.9	1.0
6	720	33	703.5	12	98.3	88.3	1.1
7	675	33	658.5	12	98.2	86.7	1.2
8	630	44	608.0	13	97.9	84.9	1.2
9	573	39	553.5	15	97.3	82.6	1.3
10	519	44	497.0	10	98.0	80.9	1.4
11	465	27	451.5	9	98.0	79.3	1.5
12	429	35	411.5	13	96.8	76.8	1.6
13	381	42	360.0	10	97.2	74.6	1.7
14	329	38	310.0	7	97.7	73.0	1.8
15	284	29	269.5	9	96.7	70.5	1.9
16	246	30	231.0	11	95.2	67.2	2.0
17	205	20	195.0	3	98.5	66.1	2.1
18	182	39	162.5	2	98.8	65.3	2.2
19	141	27	127.5	3	97.6	63.8	2.3
20	111	26	98.0	3	96.9	61.8	2.5
21	82	33	65.5	0	100	61.8	2.5
22	49	9	44.5	2	95.5	59.0	3.0
23	38	16	30.0	2	93.3	55.1	3.9
24	20	9	15.5	1	93.5	51.6	5.0
25	10	3	8.5	0	100	51.6	5.0
26	7	2	6.0	0	100	51.6	5.0
27	5	3	3.5	0	100	51.6	5.0
28	2	0	2.0	0	100	51.6	5.0
29	2	1	1.5	0	100	51.6	5.0
30	1	1	0.5	0	100	51.6	5.0