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Table 4: Laterality and location of optic nerve lesions and assessment of optic nerve morphologic features^{^a}
NMOSD (n = 42) MS (n = 14) P Value^{^b} Accuracy κ Value
Laterality of lesions 
    None 16 (38.1) 7 (50) .67 0.73
    Unilateral 18 (42.9) 4 (28.6)
    Bilateral 8 (19) 3 (21.4)
Location of lesions 
    Optic nerve 26 (61.9) 7 (50) .54 0.7
    Optic chiasm 2 (4.8) 2 (14.3) .26 0.7
    Optic tract 0 (0) 1 (7.1) .25 0.49
Atrophy 5 (11.9) 0 (0) .32 0.66 0.48
Swelling 10 (23.8) 5 (35.7) .49 0.66 0.41
↵a Data in parentheses are percentages.
↵b Fisher exact test.

	NMOSD (n = 42)	MS (n = 14)	P Value^{^b}	Accuracy	κ Value
Laterality of lesions
None	16 (38.1)	7 (50)	.67		0.73
Unilateral	18 (42.9)	4 (28.6)
Bilateral	8 (19)	3 (21.4)
Location of lesions
Optic nerve	26 (61.9)	7 (50)	.54		0.7
Optic chiasm	2 (4.8)	2 (14.3)	.26		0.7
Optic tract	0 (0)	1 (7.1)	.25		0.49
Atrophy	5 (11.9)	0 (0)	.32	0.66	0.48
Swelling	10 (23.8)	5 (35.7)	.49	0.66	0.41