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Table 1: Patient characteristics and additional procedures
No. (%)
No. 53
Mean (SD) age 65.0 (10.8)
No. (%) male 43 (81.1)
Mean delay in diagnosis (mo) 9.2 ± 11.1
Symptoms at presentation 
    Bilateral motor symptoms 48 (90.6)
    Sensory symptoms 20 (37.7)
    Bowel or bladder symptoms 13 (24.5)
    Focal unilateral motor deficit 3 (5.7)
Initial working diagnosis 
    Spinal stenosis 13 (24.5)
    Myelopathy NOS 10 (18.9)
    Transverse myelitis 9 (17.0)
    Ischemic myelopathy 4 (7.6)
    Peripheral neuropathy 3 (5.7)
    Myopathy 2 (3.8)
    NMO 2 (3.8)
    CIDP 2 (3.8)
    Other 8 (15.1)
Additional interventions 
    Systemic steroids 18 (34.0)
    IVIG 5 (9.4)
    Surgery 6 (11.3)
    Biopsy 2 (3.8)
    Plasma exchange 4 (7.6)
    Rituximab 2 (3.8)
No. of additional spine MRIs or CTs until diagnosis 
    1 10 (18.9)
    2 8 (15.1)
    3 12 (22.6)
    4 12 (22.6)
    ≥5 11 (20.8)
Note:—NOS indicates not otherwise specified; NMO, neuromyelitis optica; CIDP, chronic inflammatory demyelinating polyneuropathy.