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Table 1 Demographics, prodromal symptoms and diagnostics in the identified NORSE subgroups

From: Early clinical features of new-onset refractory status epilepticus (NORSE) in adults

 

All patients (n = 19)

FIRES (n = 6)

Viral encephalitis (n = 5)

Afebrile NORSE group (n = 8)

FIRES vs non-FIRES

Demographics

 Female

11 (58%)

3 (50%)

2 (40%)

6 (75%)

NS

 Age at onset

55 (27-65)

21 (19-24)

64 (55-64)

67 (59-71)

p = 0.001

Comorbidities

10 (53%)

0

3 (60%)

6 (75%)

p = 0.011

Prodromal symptoms

 fever

10 (53%)

6 (100%)

4 (80%)

0

NS

 headache

5 (26%)

2 (33%)

3 (60%)

0

NS

 respiratory symptoms

4 (21%)

4 (67%)

0

0

p = 0.004

 gastrointestinal symptoms

4 (21%)

2 (33%)

2 (40%)

0

NS

 cognitive symptoms

5 (26%)

0

1 (20%)

4 (50%)

NS

 psychiatric symptoms

1 (5%)

0

0

1 (12.5%)

NS

Diagnostics

 First brain MRI

  abnormal

7 (37%)

0

4 (80%)

3 (37.5%)

p = 0.044

  not performed

2 (11%)

1 (16.5%)a

1 (20%)a

0

NS

 SF

  pleocytosisb

8 (42%)

2 (33%)

4 (80%)

3 (37.5%)

NS

  elevated proteinsc

9 (47%)

1 (17%)

4 (80%)

4 (50%)

NS

  diagnostic findings

  

HSV-1 PCR+ (4) TBE Ab+ (1)

  

 Ictal EEG

  focal

11 (58%)

3(50%)

3 (60%)

5 (62.5%)

NS

  multifocal

3 (16%)

2 (33%)

0

1 (12.5%)

NS

  generalized

1 (5%)

0

0

1 (12.5%)

NS

  not available

4 (21%)

1 (17%)

2 (40%)

1 (12.5%)

NS

  1. Footnote to Table 1. a Head computed tomography was normal. b Defined as cell count > 5 × 106/l. c Defined as > 500 mg/l in patients under 50 years and > 650 mg/l in patients over 50 years. NS not significant, MRI magnetic resonance imaging, CSF cerebrospinal fluid, HSV-1 PCR herpes simplex virus 1 polymerase chain reaction, TBE Ab Tick-borne encephalitis antibodies, EEG electroencephalogram. Data presented as number (%) and median (interquartile range)