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Table 4 Correlation between duration after operation and EEG in right and left occipital regions

From: Electroencephalographic changes in neurologically free patients with tetralogy of Fallot after surgical repair: a cross section study in Egyptian children

EEG waves

Duration after operation

r

P value

O1 (Left occipital region)

 Alpha power (Uv2)

0.044

0.727

 Theta power (Uv2)

− 0.210

0.096

 Delta power (Uv2)

− 0.222

0.078

 Alpha%

0.214

0.089

 Theta%

− 0.043

0.738

 Delta%

− 0.022

0.022

O2 (right occipital region)

 Alpha power (Uv2)

0.026

0.838

 Theta power (Uv2)

− 0.234

0.063

 Delta power (Uv2)

− 0.240

0.056

 Alpha%

− 0.044

0.044

 Theta%

− 0.106

0.403

 Delta%

− 0.193

0.127

  1. P value > 0.05 non-significant, P value < 0.05 significant, P value < 0.01 highly significant, r Spearman correlation coefficient