Culling Rate of Icelandic Horses due to Bone Spavin

Table 3 Survival table for Icelandic riding horses, distributed by age and lameness after flexion test.

	Without lameness after flexion test						With lameness after flexion test
Age k	n _k	Censored c_k	Withdrawn w_k	Culling d_k	Rate of culling ĥ	Survival function Ŝ	n _k	Censored c_k	Withdrawn w_k	Culling d_k	Rate of culling ĥ	Survival function Ŝ
6	340	0	0	0	0.000	1.000	168	0	0	0	0.000	1.000
7	340	2	2	2	0.006	0.994	168	2	2	2	0.012	0.988
8	336	13	13	3	0.009	0.985	164	8	8	2	0.013	0.976
9	320	31	31	3	0.010	0.975	154	12	12	5	0.034	0.943
10	286	22	22	5	0.018	0.958	137	10	10	4	0.030	0.914
11	259	55	14	13	0.052	0.908	123	16	4	2	0.017	0.899
12	191	49	12	3	0.016	0.893	105	24	2	9	0.087	0.821
13	139	50	8	5	0.037	0.860	72	17	3	11	0.156	0.693
14	84	23	4	7	0.085	0.787	44	12	3	6	0.141	0.595
15	54	19	0	7	0.130	0.685	26	11	0	1	0.038	0.572
16	28	15	1	5	0.182	0.560	14	9	0	2	0.143	0.491
17	8	7	0	1	0.125	0.490	3	3	0	0	0.000	0.491
Total		286	107	54				124	44	44

ISSN: 1751-0147