Table 2 Frequency of EEG/Neuroimaging modalities among age and etiology subgroups
Modality | Total | Age group | Etiology | ||||
|---|---|---|---|---|---|---|---|
Children | Neonates | p | Non-cardiac surgery | Cardiac Surgery | p | ||
n = 8746 | n = 5188 | n = 3558 |  | n = 5583 | n = 3163 |  | |
Magnetic resonance imaging | 3130 (36%) | 1479 (29%) | 1651 (46%) |  < 0.001 | 2164 (39%) | 966 (31%) |  < 0.001 |
Transcranial Doppler | 667 (8%) | 313 (6%) | 354 (10%) |  < 0.001 | 394 (7%) | 273 (9%) | 0.008 |
Computed tomography | 3267 (37%) | 2568 (49%) | 699 (20%) |  < 0.001 | 1868 (33%) | 1399 (44%) |  < 0.001 |
Cranial ultrasound | 5510 (63%) | 2001 (39%) | 3509 (99%) |  < 0.001 | 3126 (56%) | 2384 (75%) |  < 0.001 |
Under age 1 (n = 5582) | 5389 (97%) | – | – | – | 3048 (96%) | 2341 (97%) | 0.005 |
Electroencephalography | 5450 (62%) | 3389 (65%) | 2061 (58%) |  < 0.001 | 3299 (59%) | 2151 (68%) |  < 0.001 |