Table 5. Comparison of IL-6 levels at the onset in patients who received maintenance therapy between relapse and non-relapse group.

	Relapse (n = 10)	Non-relapse (n = 13)	p value
Observation period, mo	22.5 (14–49)	44 (20–69)	0.925
IgG4, mg/dL	869 (354–1090)	228 (177–244)	< 0.001
IL-6, pg/mL	2.3 (1.1–3.3)	3.8 (1.8–6.9)	0.292

IL-6: Interleukin-6

Continuous data values are presented as the median (interquartile range).