Table 2. Parameters of included studies in the meta-analysis.

Author	Year	Sample size (case/control)	Total	TP	FP	FN	TN	Sensitivity (%)	Specificity (%)
Zhang	2015	60/60	120	47	18	13	42	78	70
Yang	2017	50/20	70	44	3	6	17	88	85
Xie	2013	39/19	58	20	3	19	16	85	58
Xie	2013	39/19	58	33	8	6	11	51	84
Zhu	2014	48/102	150	33	11	15	91	81	83
Zhu	2014	72/18	90	58	3	14	15	69	89
Redova	2012	90/35	125	73	8	17	27	81	77
Pei	2014	66/40	106	63	7	3	33	95	82
Konishi	2012	56/30	86	54	0	2	30	96	97
Phua	2014	17/28	45	15	0	2	28	88	97
Ng	2013	70/50	120	58	4	12	46	83	92
Luo	2014	60/29	89	56	6	4	23	93	79