Table 4.

Estimated associations between factors and breakdown duration (log_length) for Class 1 and Class 2 subpopulations from a finite mixture model.

Log_Length	Class 1 “Central”				Class 2 “Tail”
	Coef.	p	Lower 95%	Upper 95%	Coef.	p	Lower 95%	Upper 95%
log_hs	<0.001	0.835	−0.003	0.002	0.090	<0.001	0.077	0.102
herd_history
TB free	ref				ref
Zero reactors	−0.001	0.787	−0.009	0.007	0.115	<0.001	0.068	0.162
1 reactors	0.015	<0.001	0.007	0.023	0.129	<0.001	0.076	0.182
2–4 reactors	0.017	<0.001	0.009	0.025	0.219	<0.001	0.166	0.273
≥5 reactors	0.017	0.004	0.005	0.029	0.226	<0.001	0.155	0.296
herd_type_num
Beef	ref				ref
Dairy	0.025	<0.001	0.018	0.031	−0.075	<0.001	−0.114	−0.036
Other	0.003	0.560	−0.006	0.012	−0.095	0.003	−0.157	−0.033
Suckler	0.006	0.015	0.001	0.011	−0.014	0.373	−0.046	0.017
Controlled finishing units
Never	ref				ref
Designated	−0.001	0.932	−0.030	0.027	0.710	<0.001	0.603	0.818
log_NPH	−0.003	0.040	−0.005	<0.001	−0.014	0.054	−0.028	<0.001
parcel_cut
1	ref				ref
2	<0.001	0.902	−0.006	0.006	0.026	0.177	−0.012	0.063
3	0.004	0.224	−0.002	0.010	0.031	0.110	−0.007	0.069
4	0.005	0.116	−0.001	0.012	0.064	0.002	0.023	0.105
≥5	0.001	0.736	−0.005	0.007	0.049	0.006	0.014	0.084
med_area	<0.001	<0.001	<0.001	<0.001	<0.001	0.299	<0.001	0.001
cut_mmoves
<90	ref				ref
>90	−0.039	<0.001	−0.047	−0.032	0.108	<0.001	0.062	0.155
bd_start_yr	<0.001	0.470	−0.001	0.001	−0.023	<0.001	−0.029	−0.017