TABLE 3.
Laboratory, imaging, and electromyography results
| X ± S | N/Total N (%) | Range | |
|---|---|---|---|
| Vitamin B12 (180–914 pg/ml) | 333.6 ± 396.7 | 34/57 (60%) | 6.0–1500 |
| HCY (0–15 μmol/L) | 44.6 ± 42.1 | 31/45 (69%) | 2.6–158.4 |
| Hb (130–172 g/L) | 133.3 ± 20.7 | 25/71 (35%) | 70–168 |
| Abnormal spinal cord MRI | 26/50 (52%) | ||
| Abnormal brain MRI | 6/11 (55%) | ||
| EMG | |||
| Demyelinating | 7/87 (8%) | ||
| Mixed | 80/87 (92%) | ||
| Abnormal motor nerve | 178/308 (58%) | ||
| Abnormal sensory nerve | 199/326 (61%) | ||
| Abnormal upper limb nerve | 106/311 (34%) | ||
| Abnormal lower limb nerve | 271/323 (84%) | ||
Notes: N/Total N (%), abnormal number/total number (%); EMG, electromyography; Hb, hemoglobin; HCY, homocysteine; MRI, magnetic resonance imaging; Mixed, both axonal damage and demyelinating.