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Table 3 Summary statistics for dogs with a syrinx extending to the SDH

From: MRI characteristics for “phantom” scratching in canine syringomyelia

Spinal segment

Scratchers (19 dogs)

Non-Scratchers (18 dogs)

Chi-square [p-value]

Fisher’s Exact

p-value

% SDH SM

# SDH

# SM

% SDH SM

# SDH SM

# SM

C1

0

0

0

0

0

0

n/a

n/a

C2

0

0

0

0

0

0

n/a

n/a

C3

89.5

17

19

11.1

2

18

19.7 [<0.001]

<0.001

C4

83.3

15

18

14.3

2

14

12.4 [<0.001]

<0.001

C5

64.7

11

17

0

0

12

9.9 [0.002]

<0.001

C6

62.5

5

8

0

0

5

2.8 [0.095]

0.044

C7

40

2

5

0

0

1

 

0.667

C8

0

0

0

0

0

0

n/a

n/a

  1. % SDH SM – proportion of dogs that had a syrinx which extended to superficial dorsal horn
  2. # SDH SM - number of dogs that had a syrinx which extended to superficial dorsal horn
  3. #SM - number of dogs that had a syrinx at that spinal cord segment. Bold font - p values indicates a significant result (p < 0.05)