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Table 1 Distribution of opacity, homogeneity and location of sand accumulations (parameters from Keppie et al.) in sand colic cases and controls

From: Radiographic parameters for diagnosing sand colic in horses

  

Controls (n = 20)

Sand colic (n = 37)

Chisq

Variable

Categories

Number

Percent

Number

Percent

p-value

Opacity

Equally dense

8

40

3

8

0.004

 

More dense

12

60

34

92

 

Homogeneity

Homogenous

8

40

30

81

0.002

 

Mixture

12

60

7

19

 

Location

Cranioventral

25

89

34

92

0.418

 

Other

3

11

3

8