The effect of age when group housed and other management factors on playing and non-nutritive sucking behaviour in dairy calves: a cross sectional observational study

Table 6 P-values, estimates, OR’s and 95% CI’s of the explanatory variables that came out statistically significant (Age when filmed and Milk allocation: Drinker bucket with teat) for both outcomes (play and non-nutritive sucking) throughout backward elimination where 11 other explanatory variables where excluded from the multivariable logistic regression model

Drop no	P-value	Estimate	OR	95% CI	P-value	Estimate	OR	95% CI
Drop no	Play & Age when filmed				Non–nutritive sucking & Milk allocation: Drinker bucket with teat
0	0.02	− 0.031	0.97	[0.94; 0.99]	0.37	− 1.374	0.25	[0.02; 1.9]
1	0.013	− 0.032	0.97	[0.94; 0.99]	0.36	− 1.398	0.25	[0.01; 2.12]
2	0.022	− 0.028	0.97	[0.95; 0.99]	0.37	− 1.349	0.26	[0.01; 1.91]
3	0.021	− 0.028	0.97	[0.95; 0.99]	0.39	− 1.253	0.29	[0.004; 2.36]
4	0.022	− 0.027	0.97	[0.95; 0.99]	0.33	− 1.376	0.26	[0.002; 1.79]
5	0.018	− 0.028	0.97	[0.95; 0.99]	0.29	− 1.479	0.23	[4.49e−07; 2.04]
6	0.017	− 0.029	0.97	[0.95; 0.99]	0.35	− 1.305	0.27	[5.24e−13; 2.39]
7	0.022	− 0.027	0.97	[0.95; 0.99]	0.27	− 1.517	0.22	[1.39e−37; 1.89]
8	0.024	− 0.026	0.97	[0.95; 0.99]	0.10	− 2.291	0.10	[2.85e−31; 0.81]
9	0.006	− 0.032	0.97	[0.95; 0.99]	0.06	− 2.564	0.08	[1.82e−33; 0.59]
10	0.008	− 0.032	0.97	[0.94; 0.99]	0.02	− 2.895	0.06	[7.90e−18; 0.28]
11	0.003	− 0.035	0.97	[0.93; 0.99]

ISSN: 1751-0147