Table 2.

Demographic information and basic characteristics of the study population

		All subjects	Group of chemiluminescence immunoassay	Group of colloidal gold
Total Number
	Subjects number	169	109	60
	Male (%)	92 (54%)	60 (55%)	32 (53%)
	Female (%)	77 (46%)	49 (45%)	28 (47%)
Age
	Minimum	19 y old	19 y old	20 y old
	Maximum	90 y old	90 y old	85 y old
	Median	55 y old	54 y old	57 y old
	18‐50 y old	69 (41%)	46 (42%)	23 (38%)
	51 ~ 64 y old	49 (29%)	30 (28%)	19 (32%)
	65 y and over	51 (30%)	33 (30%)	18 (30%)
Antibody detection tests
	Number of samples for single patient min‐max (median)	2‐11 (3)	2‐11 (3)	2‐4 (3)
	Proportion of IgM turned positive	163/169	104/109	59/60
	Proportion of IgG turned positive	168/169	109/109	59/60