Table 2. Diagnostic accuracy of serum IgG4 concentration for individual study.

Author	Year	Assay for IgG4	Cut-off (mg/dL)	Participant, n	True positive	False positive	False negative	True negative	Sensitivity	Specificity
Aparisi et al.	2005	Nephelometry	130	54	8	0	17	29	32%	100%
Boonstra et al.	2014	Nephelometry	140	383	66	45	7	265	90%	85%
Carruthers et al.	2015	Nephelometry	135	380	65	125	7	183	90%	59%
Choi et al.	2007	SRI	135	173	22	9	8	134	73%	94%
Ghazale et al.	2007	Nephelometry	140	510	34	32	11	433	76%	93%
Hamano et al.	2001	SRI	135	194	19	3	1	171	95%	98%
Hirano et al.	2006	Nephelometry	135	116	33	4	2	77	94%	95%
Kaji et al.	2012	Nephelometry	135	106	32	2	3	69	91%	97%
Kamisawa et al.	2008	NR	135	50	12	2	5	31	71%	94%
Masaki et al.	2012	NR	135	180	128	10	4	38	97%	79%
Mavragani et al.	2014	Nephelometry	135	133	3	7	4	119	43%	94%
Nakazawa et al.	2012	NR	135	112	41	6	6	59	87%	91%
Ohara et al.	2013	Nephelometry	135	848	309	41	35	463	90%	92%
Oseini et al.	2011	Nephelometry	140	384	69	37	28	250	71%	87%
Sanchez-Castanon et al.	2012	Nephelometry	130	187	7	10	5	165	58%	94%
Su et al.	2015	ELISA	135	957	12	32	0	913	100%	97%
Szántó et al.	2014	Nephelometry	135	51	7	1	1	42	88%	98%
Tabata et al.	2011	Nephelometry	135	554	53	31	13	457	80%	94%
Tanaka et al.	2015	NR	135	158	34	15	4	105	89%	88%
Uehara et al.	2005	Nephelometry	135	12	6	0	0	6	100%	100%
Van Heerde et al.	2014	Nephelometry	140	86	28	10	5	43	85%	81%
Wu et al.	2013	NR	200	19	8	0	7	4	53%	100%
Yamamoto et al.	2012	Nephelometry	144	401	97	28	5	271	95%	91%

SRI: single radial immunodiffusion; NR: not reported.