| |
Play
|
Non-nutritive sucking
|
|---|
|
P-value
|
Estimate
|
OR
|
95% CI
|
P-value
|
Estimate
|
OR
|
95% CI
|
|---|
|
Age when grouped
|
0.72
|
− 0.009
|
0.99
|
[0.94; 1.05]
|
0.44
|
− 0.03
|
0.98
|
[0.92;1.05]
|
|
Age when filmed
|
0.003
|
− 0.04
|
0.97
|
[0.93; 0.99]
|
0.15
|
0.02
|
1.02
|
[0.99; 1.05]
|
|
Age difference in group
|
0.93
|
− 0.004
|
0.99
|
[0.95; 1.04]
|
0.65
|
0.009
|
1.009
|
[0.97; 1.06]
|
|
Group size
|
0.41
|
− 0.13
|
0.88
|
[0.63; 1.18]
|
0.13
|
0.24
|
1.27
|
[0.95; 1.73]
|
|
Space per calf
|
0.09
|
0.25
|
1.29
|
[0.97; 1.80]
|
0.72
|
0.07
|
1.07
|
[0.77; 1.50]
|
|
Sex
|
0.77
|
− 0.18
|
0.84
|
[0.28; 2.43]
|
0.93
|
0.05
|
1.05
|
[0.35; 3.23]
|
|
Sickness
|
0.19
|
− 0.84
|
0.43
|
[0.10; 1.34]
|
0.88
|
0.12
|
1.13
|
[0.24; 4.49]
|
|
Organic/conventional farm
|
0.50
|
0.37
|
0.69
|
[0.26; 2.02]
|
0.35
|
− 0.60
|
0.55
|
[0.12; 2.07]
|
|
Regrouping
|
0.06
|
− 0.97
|
0.38
|
[0.13; 1.09]
|
0.96
|
0.03
|
1.03
|
[0.31; 3.84]
|
|
Indoor / outdoor rearing
|
0.34
|
− 0.58
|
0.56
|
[0.16; 1.80]
|
0.79
|
0.18
|
1.19
|
[0.27; 4.42]
|
|
Dry teats
|
0.11
|
0.81
|
2.24
|
[0.89; 6.90]
|
0.27
|
− 0.68
|
0.51
|
[0.14; 1.46]
|
|
Milk allocation method
|
|
Trough
|
–
|
0
|
1
|
–
|
–
|
0
|
1
|
–
|
|
Drinker bucket with teat
|
0.17
|
− 1.55
|
0.21
|
[0.04; 0.97]
|
0.02
|
− 2.90
|
0.06
|
[7.90e−18; 0.28]
|
|
Bowl
|
0.67
|
− 0.42
|
0.66
|
[0.10; 3.75]
|
0.57
|
0.45
|
1.57
|
[0.36; 11.46]
|
- P-values, estimates, OR and 95% CI for OR from the logistic regression analyses of the association between the two response variables (play and non-nutritive sucking) and the 12 explanatory variables. Non-significant P-values, OR and CI are noted from immediately before the explanatory variable was dropped based on backwards elimination. Significant P-values are marked in italic. For milk allocation method, ‘Trough’ is the reference to which ‘Drinker bucket with teat’ and ‘bowl’ is compared
