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. 2014 May 13;56(1):30. doi: 10.1186/1751-0147-56-30

Table 3.

Results of the one-way analysis of covariance and pairwise t-tests of inter breed comparison

Variable Group Adjusted means (at body weight = 10 kg) Equality of the adjusted means (p-value) Global regression coefficient
 Equalitiy of slopes
Estimate P -value Estimates P -value
Total brain volume
 CKCS:
 81.07 cm3 ± 1.03
 0.0011
 47.13 ± 2.96
 < 0.001
 35.31 ± 7.67
 0.009
brachycephalic:
 84.30 cm3 ± 1.41
mesaticephalic:
 77.18 cm3 ± 1.41
56.75 ± 4.82
42.39 ± 4.44
 0.026
Cerebral volume
 CKCS:
 70.98 cm3 ± 1.15
 0.041
 39.18 ± 2.83
 < 0.001
 27.75 ± 7.99
 0.23
brachycephalic:
 69.83 cm3 ± 1.51
mesaticephalic:
 65.70 cm3 ± 1.57
 43.80 ± 4.77
38.21 ± 4.00
Metencephalic volume
 CKCS:
 11.6 cm3 ± 0.11
 0.0015
 6.34 ± 0.40
 < 0.001
 7.57 ± 0.87
 0.015
brachycephalic:
 11.79 cm3 ± 0.2
mesaticephalic:
 10.91 cm3 ± 0.20
 7.21 ± 0.68
5.39 ± 0.64
Total endocranial volume
 CKCS:
 83.93 cm3 ± 7.13
 0.0015
 52.55 ± 3.10
 < 0.001
 35.04 ± 8.14
  
brachycephalic:
 85.83 cm 3  ± 7.67
mesaticephalic:
 81.53 cm3 ± 8.65
 61.47 ± 4.79
 0.024
49.65 ± 4.76
 0.009
Rostral and middle cranial fossa volume
 CKCS:
 69.84 cm3 ± 1.31
 0.21
 41.06 ± 3.17
 < 0.001
 32.46 ± 8.51
 0.15
brachycephalic:
 72.94 cm3 ± 1.66
mesaticephalic:
 70.08 cm3 ± 1.71
 43.52 ± 5.98
43.02 ± 4.22
Caudal cranial fossa volume
 CKCS:
 12.51 cm3 ± 0.21
 0.28
 8.01 ± 0.53
 < 0.001
 8.38 ± 1.18
 0.76
brachycephalic:
 12.90 cm3 ± 0.28
mesaticephalic:
 12.20 cm3 ± 0.29
 8.45 ± 1.10
7.63 ± 0.78
Subarachnoid space
 CKCS:
 4.67 cm3 ± 0.08
 0.63
 6.09 ± 0.41
 < 0.001
 6.52 ± 0.67
 0.009
brachycephalic:
 4.54 cm3 ± 0.11
mesaticephalic:
 4.44 cm3 ± 0.29
 4.73 ± 0.38
  
7.05 ± 0.92
 0.023
Caudal fossa parenchyma percentage § CKCS:
 0.89 ± 0.001
 < 0.0001 -0.00287 ± 0.00021 < 0.001 -0.0046 ± 0.00048
  
brachycephalic:
 0.91 ± 0.003
mesaticephalic: 0.86 ± 0.004
-0.0056 ± 0.00058
 < 0.001
-0.0024 ± 0.00027 < 0.001

§For the analysis of CFPP body weight was not transformed by logarithm.

The table presents results of the comparison of the equality of regression coefficients (slopes) on the logarithm of the body weight and the equality of adjusted means at BW = 10 kg between the different groups. Significantly different estimates and p-values are bold-typed and represent the result of the pairwise comparison. Normal typed estimates and p-values are not significantly different and represent the result of the global comparison.