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Table 2: Comparison of disease duration and ARR between patients with and without CE during an acute attack
CE Present CE Absent P Value
Disease duration (mean) (yr) 4.76 ± 4.81 (n = 21) 7.26 ± 5.75 (n = 38) .05
ARR (mean) 1.15 ± 0.73 (n = 21) 0.73 ± 0.52 (n = 38) .03^{^a}
↵a P < .05, based on Mann-Whitney test.
	CE Present	CE Absent	P Value
Disease duration (mean) (yr)	4.76 ± 4.81 (n = 21)	7.26 ± 5.75 (n = 38)	.05
ARR (mean)	1.15 ± 0.73 (n = 21)	0.73 ± 0.52 (n = 38)	.03^{^a}