Table 6. Comparison of IL-6 levels at the onset in patients who did not receive maintenance therapy between relapse and non-relapse group.

	Relapse (n = 4)	Non-relapse (n = 10)	p value
Observation period, mo	50 (17–80.5)	25.5 (9–29)	0.322
IgG4, mg/dL	353.5 (178–491)	379 (200–485)	0.888
IL-6, pg/mL	1.7 (1.3–4.2)	2.2 (1.2–2.5)	0.478

IL-6: Interleukin-6

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