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Table 1: Association between the proportion of patients with CE and the presence of AQP4-IgG seropositivity^{^a}
AQP4-IgG CE Present CE Absent No. of Patients (Total)
Positive 31 (64.6%) 17 (35.4%) 48
Negative 4 (55.6%) 5 (44.4%) 9
Total 36 (63.2%)^{^b} 21 (36.8%)^{^b} 57 (2 not tested)
↵a Fisher exact test, P = .7.
↵b One patient was not tested.
AQP4-IgG	CE Present	CE Absent	No. of Patients (Total)
Positive	31 (64.6%)	17 (35.4%)	48
Negative	4 (55.6%)	5 (44.4%)	9
Total	36 (63.2%)^{^b}	21 (36.8%)^{^b}	57 (2 not tested)