Table 1. Demographic and clinical characteristics of patients with relapsing neuromyelitis optica (n = 15).

Sex (female/male)	13/2
Age (years)	41 (17–56)
Disease duration (years)	8 (2–17)
EDSS score	5 (1–8.5)
Total number of attacks	5 (2–10)
Number of ON attacks	2 (1–4)
Number of LETM attacks	3 (1–8)
* Interval from the last attack (years)	2 (0.5–4)
* Interval from the last ON attack (years)	2.8 (0.5–4)
* Interval from the last LETM attack (years)	2 (0.5–4)
Serological test for NMO IgG (positive/negative)	9/6

Data shown as median and range (minimum, maximum). EDSS, Kurtzke Expanded Disability Status Scale [24]; ON, optic neuritis; LETM, longitudinally extensive transverse myelitis; NMO-IgG, antiaquaporin-4 autoantibody;

^*Last attack MRI/SPECT time interval.