Table 1. Characteristics of the nine include studies in this meta-analysis.

Study	Country	Year	Sample size	Sample type	Assay method	Cut off value	TP	FP	FN	TN
Konety BR	USA	2000	106	Urine	ELISA test	13 A /ug	53	0	2	51
Van Le TS	USA	2005	140	Urine	Sandwich immunoassay	OD=0.04	67	3	8	62
Chen TE	China	2005	76	Urine	ELISA test	13 A /ug	33	0	2	41
Guo B	China	2011	155	Urine	QPCR	13 A /ug	65	14	7	69
Feng CC	China	2011	136	Urine	ELISA test	1.7×10−4A	74	0	2	60
Jiang MJ	China	2013	88	Urine	ELISA test	13 A /ug	28	0	2	58
Huang YH	China	2014	82	Urine	ELISA test	13 A /ug	49	1	7	25
Wang XP	China	2014	156	Urine	ELISA test	13 A /ug	42	0	4	110
Yang JR	China	2015	180	Urine	ELISA test	13 A /ug	75	0	5	100

ELISA, Enzyme Linked Immunosorbent Assay; QPCR, Quantitative Polymerase Chain Reaction; OD, Absorbance units; TP, true positive; FP, false-positive; TN, true negative; FN, false-negative.