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Table 2 The results of statistical analyses of the risk factors—weight, nutrition, sex, dogs’ housing and reproductive state for canine dementia

From: Risk factors for canine cognitive dysfunction syndrome in Slovakia

Variable (group 1 vs group 2)

n1

N1

n2

N2

OR

sd (OR)

LB

UB

Z-statistics

P value

Weight OR (under 15 kg vs over 15 kg) 

45

112

34

103

1.36

0.21

0.78

2.38

1.0879

0.1383

Nutrition OR (uncontrolled vs controlled diet)

50

102

29

113

2.79

0.82

1.57

4.94

3.5006

0.0002

Sex OR (males vs females)

47

116

32

99

1.43

0.20

0.81

2.50

1.2401

0.1075

Dogs’ housing OR (outside vs inside)

51

137

28

78

1.06

0.28

0.59

1.89

0.1943

0.4230

Reproductive state OR (neutered vs entire dogs)

60

167

19

48

0.86

0.39

0.44

1.65

−0.4627

0.3218

  1. n 1 the number of moderate and severe cognitive impaired dogs in group 1 (weight below 15 kg, nutrition-uncontrolled diet, males, housing inside, neutered), n 2 the number of moderate and severe cognitive impaired dogs in group 2 (weight above 15 kg, nutrition-controlled diet, females, housing outside, entire), N 1 , N 2 total number of dogs in group 1 and group 2, OR odds ratio, sd (OR) standard deviation of odds ratio, LB lower bound, UB upper bound of Wald 95 % empirical confidence interval (CI) for OR, Z-statistics two-sample Z-test about log OR (P values related to statistically significant results are highlighted in italics; the bounds of CI are back transformed bounds of CI for log OR)