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Table 2 Risk of abnormal EEG findings in patients seizure-free 2 years: one way ANOVA analysis

From: The clinical value of long - term electroencephalogram (EEG) in seizure - free populations: implications from a cross-sectional study

Variable

All

(n = 262)

a = abnormal EEG presentation

(n = 75)

b = normal EEG presentation

(n = 187)

T/χ2 value(a vs b)

P value

Seizure type classification

   

 Idiopathic epilepsy(%)

191 (72.9)

43 (57.3)

148 (79.1)

12.9

0.001 a

 Symptomatic/ Cryptogenic epilepsy(%)

71 (27.1)

32 (42.7)

39 (20.9)

History of cerebral trauma

13 (5.0)

10 (13.5)

3 (1.6)

15.6

0.001 a

History of cerebral surgery

6 (2.3)

6 (8.1)

0 (0)

15.4

0.001 a

Family history of epilepsy(%)

8 (1.6)

5 (6.8)

3 (3.1)

4.7

0.044 a

Imaging findings(%)

29 (11.2)

18 (25.0)

11 (5.9)

19.0

0.001 a

  1. a Statistically significant