Table 5 Associations between pre- and post-operative EEG severity.

From: Continuous electroencephalography (cEEG) in infants with congenital heart disease (CHD)

Factor

Pre-op EEG severity

Spearman correlation (95% CI)

p value

Normal

Mild

Mild–moderate

Moderate

Moderate–severe

N

N (%)

N

N (%)

N

N (%)

N

N (%)

N

N (%)

Severity of immediate post-op EEG, n (%)

44

 

18

 

1

 

2

 

2

 

0.10 (−0.15, 0.35)

0.42

  Normal

 

7 (16)

 

3 (17)

 

0 (0)

 

1 (50)

 

0 (0)

  

  Mild

 

20 (45)

 

7 (39)

 

0 (0)

 

0 (0)

 

1 (50)

  

  Mild–moderate

 

6 (14)

 

3 (17)

 

0 (0)

 

0 (0)

 

0 (0)

  

  Moderate

 

9 (20)

 

3 (17)

 

1 (100)

 

0 (0)

 

1 (50)

  

  Moderate–severe

 

1 (2.3)

 

1 (5.6)

 

0 (0)

 

0 (0)

 

0 (0)

  

  Severe

 

1 (2.3)

 

1 (5.6)

 

0 (0)

 

1 (50)

 

0 (0)

  

Severity of post-op 24-h EEG, n (%)

40

 

18

 

1

 

2

 

2

 

0.38 (0.14, 0.62)

0.002

  Normal

 

9 (23)

 

2 (11)

 

0 (0)

 

0 (0)

 

0 (0)

  

  Mild

 

18 (45)

 

6 (33)

 

0 (0)

 

0 (0)

 

1 (50)

  

  Mild–moderate

 

5 (13)

 

1 (5.6)

 

0 (0)

 

0 (0)

 

0 (0)

  

  Moderate

 

8 (20)

 

5 (28)

 

1 (100)

 

1 (50)

 

1 (50)

  

  Moderate–severe

 

0 (0)

 

3 (17)

 

0 (0)

 

0 (0)

 

0 (0)

  

  Severe

 

0 (0)

 

1 (5.6)

 

0 (0)

 

1 (50)

 

0 (0)

  
  1. Statistically significant p values are bold and italicized.
  2. CI confidence interval.
  3. p value from Spearman correlation.