Study on incidence of lamb morbidity and mortality and associated risk factors in the mixed crop-livestock production system of Gewata District, Kaffa zone, southwestern Ethiopia

Table 3 Kaplan-Meier estimate of the hazard of morbidity and mortality in lamb from birth to three months

Age interval (months)	Number of lamb at risk	No. of cases	Censored number	Hazard	Survival probability	Cumulative incidence	Std. error	95% CI for Hazard
Morbidity
0–1	211	44	0	0.1618	0.8503	0.1497	0.0243	0.1141–0.2094
1–2	164	27	0	0.3086	0.6230	0.3770	0.0587	0.1936–0.4236
2–3	25	4	0	0.2051	0.5071	0.4929	0.1020	0.0052–0.4051
Mortality
0–1	197	28	0	0.1029	0.9021	0.0979	0.0194	0.0649–0.1410
1–2	140	9	0	0.1029	0.8138	0.1862	0.0342	0.0357–0.1700
2–3	31	3	0	0.1538	0.6976	0.3024	0.0886	0.0000–0.3274