Table 2 The clinical characteristics of AE in pre- and post- COVID-19 epidemic.

From: The characteristic change of autoimmune encephalitis after the COVID-19 epidemic in Guangxi, China

Item

Pre-COVID-19

Post-COVID-19

Effect values

P values

AE (n = 169)

78

91

  

AE symptoms

    

Fever, n (%)

34 (43.58)

46 (50.55)

− 0.069

0.366

Seizures, n (%)

31 (39.74)

50 (54.95)

− 0.152

0.049*

Psychiatric disturbance, n (%)

48 (51.28)

49 (53.84)

0.078

0.313

Disturbance of consciousness, n (%)

32 (41.03)

33 (36.26)

0.049

0.526

Abnormal movements, n (%)

28 (35.90)

50 (54.95)

− 0.190

0.013*

Autonomic dysfunction, n (%)

16 (20.51)

38 (41.76)

− 0.277

0.003*

Type of encephalitis

  

− 0.019

0.803

Anti-NMDAR encephalitis, n (%)

26 (33.33)

32 (35.16)

Other AE, n (%)

52 (66.67)

59 (64.84)

− 

CASE score, median (IQR)

5 (3, 9)

8 (4, 11)

0.182

0.041*

Associated tumor, n (%)

5 (6.41)

4 (4.96)

0.045

0.561

Complicated by pneumonia, n (%)

19 (24.36)

37 (40.66)

− 0.173

0.025*

Complicated by immune diseases, n (%)

7 (8.97)

21 (23.08)

− 0.189

0.014*

Antibiotic use, n (%)

24 (30.77)

42 (46.15)

− 0.157

0.041*

ICU admission, n (%)

9 (11.54)

14 (15.38)

− 0.56

0.467

ICU stays(d), median (IQR)

18 (5.25, 25)

11.5 (5, 18.25)

0.153

0.326

Use ventilator, n (%)

7 (8.97)

8 (8.79)

0.01

0.985

Abnormal EEG, n (%),

55 (67.95)

74 (81.3)

− 0.127

0.099

Slow activity, n (%)

22 (28.21)

24 (26.37)

0.021

0.790

Epileptic discharges, n (%)

10 (12.82)

26 (28.57)

− 0.192

0.013*

Abnormal MRI, n (%), (miss = 3)

54 (71.05)

62 (68.89)

0.023

0.762

CSF

    

Pleocytosis, n (%)

45 (57.69)

51 (56.04)

0.017

0.829

Elevated CSF IgG, n (%)

40 (51.28)

46 (50.55)

0.007

0.924

Elevated opening pressure, n (%)

11 (14.10)

22 (24.18)

− 0.127

0.100

Elevated CSF protein levels (> 450 mg/L) (n, %)

33 (42.31)

40 (43.96)

− 0.017

0.829

Treatment

    

First-line immunotherapy, n (%)

    

Steroids (n, %)

75 (96.15)

88 (96.70)

− 0.150

0.847

IVIG (n, %)

50 (64.10)

44 (48.35)

− 0.158

0.040*

PE (n, %)

5 (6.41)

7 (7.69)

− 0.025

0.746

Second-line immunotherapy, n (%)

    

Rituximab (n, %)

5 (6.41)

15 (16.48)

− 0.155

0.043*

Cyclophosphamide, n (%)

7 (8.97)

5 (5.49)

0.068

0.380

Other immunotherapy

    

MMF, n (%)

16 (20.51)

9 (9.89)

0.149

0.052

AZA (n, %)

5 (6.41)

5 (5.49)

0.019

0.801

Mortality, n (%)

2 (2.56)

5 (5.49)

− 0.073

0.341

Baseline mRS, median (IQR)

3 (2, 4)

3 (2, 4)

0.055

0.524

mRS on Discharge, median (IQR)

3 (2, 4)

2 (1, 3)

− 0.065

0.457

mRS at follow up, median (IQR)

1 (0, 1)

1 (0, 1)

− 0.117

0.162

Relapse at follow up (n, %)

4 (5.13)

9 (9.89)

− 0.089

0.247

  1. *P value < 0.05 is significant.
  2. AE autoimmune encephalitis, COVID-19 coronavirus disease 2019, CASE Clinical Assessment Scale in Autoimmune Encephalitis, ICU intensive care unit, IQR interquartile range, SD standard deviation, CSF cerebral spinal fluid, NMDAR N-methyl-D-aspartate receptor, MRI magnetic resonance imaging, EEG electroencephalogram, IVIg intravenous immunoglobulin, PE plasma exchange, mRS modified Rankin Scale, MMF mycophenolate mofetil, AZA azathioprine.
  3. Significant values are in bold.