Table 2.
Statistical estimates for electrodiagnstic criteria for demyelination in Guillain-Barré syndrome and its mimics
| Diagnosis (percentage) | Specificity | Sensitivity | PLR | NLR | ||
|---|---|---|---|---|---|---|
| GBS | GBS mimics | |||||
| Prolongation of DML | 71 | 26 | 0.74 | 0.71 | 2.76 | 0.38 |
| Center A | 79 | 25 | 0.75 | 0.79 | ||
| Center B | 57 | 58 | 0.42 | 0.57 | ||
| Center C | 100 | 50 | 0.5 | 1.00 | ||
| Abnormal F-waves | 80 | 42 | 0.57 | 0.80 | 1.91 | 0.34 |
| Center A | 85 | 35 | 0.65 | 0.85 | ||
| Center B | 57 | 58 | 0.42 | 0.57 | ||
| Center C | 100 | 100 | 0 | 1 | ||
| Slow NCV | 49 | 34 | 0.66 | 0.49 | 1.43 | 0.77 |
| Center A | 49 | 25 | 0.75 | 0.49 | ||
| Center B | 48 | 25 | 0.75 | 0.48 | ||
| Center C | 67 | 83 | 0.16 | 0.67 | ||
| SSP (ulnar vs. sural) | 41 | 5 | 0.93 | 0.35 | 5.29 | 0.69 |
| Center A (orthodr.) | 41 | 5 | 0.95 | 0.41 | ||
| Center B (antidr.) | 0 | 0 | 1 | 0 | ||
| Center C (antidr.) | 33 | 17 | 0.83 | 0.33 | ||
| SSP (median vs. sural) | 26 | 8 | 0.91 | 0.26 | 3.12 | 0.81 |
| Center A (orthodr.) | 44 | 17 | 0.83 | 0.44 | ||
| Center B (antidr.) | 18 | 0 | 1 | 0.18 | ||
| Center C (antidr.) | 0 | 17 | 0.83 | 0 | ||
| Elevated CSF protein | 80 | 29 | 0.71 | 0.80 | 2.74 | 0.28 |
| Center A | 87 | 33 | 0.67 | 0.87 | ||
| Center B | 71 | 22 | 0.78 | 0.71 | ||
| Center C | N/A | N/A | N/A | N/A | ||