Treatment and survival of Norwegian cattle after uterine prolapse

Table 1 Univariate analysis of explanatory variables and survival outcomes of 116 cases of bovine uterine prolapse

Variable	Level	Number of cases	Day 0			Number of cases with treatment and survival data	Day 30			Day 180
			Treated	Slaughtered /euthanasied	P-value chi squared	Number of cases with treatment and survival data	Number of deaths 0 to 30	Mean time to death	P-value cox	Number of deaths	Mean time to death	P-value cox
Production	Beef	78	67	11	0.021	64	19	7.3	0.528	40	19.2	0.313
	Dairy	48	33	15		33	8	9.5		17	20.5
Parity	Primiparous	94	79	15	0.225	76	18	7.2	0.114	45	21.0	0.782
	Multiparous	32	21	11		21	9	9.4		12	15.6
Hold	< 2.75	19	12	7	0.644	13	5	11.1	0.663	10	20.6	0.417
	2.75 to 3.5	63	52	11		50	12	5.3		27	19.0
	> 3.75	44	36	8		34	10	9.5		20	19.7
Clinical state	Good/Acceptable	108	90	18	0.007	87	21	7.9	0.030	49	20.5	0.046
	Poor	18	10	8		10	6	7.9		8	13.4
Recumbent	Yes	81	60	21	0.049	59	18	8.6	0.510	37	19.6	0.207
	No	45	40	5		38	9	6.7		20	19.5
Dystocia	Eutocia	75	58	17	0.529	56	19	7.1	0.118	34	17.2	0.651
	Dystocia	50	42	8		40	8	9.8		23	23.0
	Missing	1
Milk fever	absent	81	63	18	0.873	61	13	8.8	0.341	33	21.7	0.600
	Present	10	2	8		8	3	5.3		5	15.2
	Missing	35
Placenta attached	no	51	40	11	0.538	39	8	3.8	0.630	22	20.5	0.905
	Yes	40	30	10		30	8	12.4		16	21.2
	Missing	35
Damage to uterus	None	69	61	8	0.006	58	16	6.7	0.959	35	19.3	0.740
	Traumatised and/or oedematous	57	39	18		39	11	9.8		22	19.9
Pre-partum vaginal prolapse	No	81	64	17	0.052	62	49	5.4	0.053	34	20.6	0.306
	Yes	44	35	9		34	20	10.3		23	18.0
	Missing	1

ISSN: 1751-0147