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Table 3 Tests used to diagnose or rule-out seizures by seizure group.

From: Traditional and non-traditional treatments for autism spectrum disorder with seizures: an on-line survey

Diagnostic Test Overall Controls Clinical Seizures Subclinical Seizures
Routine electroencephalogram 61.8% 28% 78% 68%†,ns
Overnight electroencephalogram 34.6% 10% 41% 60% †,†
No Test 27.5% 56% 17% 10%†,ns
Ambulatory electroencephalogram 17.6% 3% 21% 34% †,‡
Magnetoencephalography 3.4% 1% 4%ns 6% ‡,ns
Positron emission tomography 5.1% 1% 6% 10% †,ns
Single photon emission computed tomography 5.5% 1% 6% 13% †,ns
  1. ‡p < = 0.001; †p < = 0.0001
  2. For each diagnostic test listed, statistical comparisons were made between the clinical seizure group and the control group (superscript after the clinical seizure percentage), the subclinical seizure group and the control group (1st superscript after the subclinical seizure percentage) and between the clinical and subclinical seizure group (2nd superscript after the subclinical seizure percentage). Since there are 7 diagnostic tests and 3 comparisons for each diagnostic test resulting in 21 comparisons. The Bonferroni correction results in an alpha of 0.05/21 = 0.0023, so we have set the alpha to p < = 0.001 to be conservative.