Validation of four Helicobacter pylori rapid blood tests in a multi-ethnic Asian population

Table 1 Characteristics of recruited patients

Kits used	PS, QV, BM	PS, UG	All
Number	109	99	208
Male:female	56:53	63:36	119:89
C:I:M:O1	91:12:4:2	83:7:6:3	174:19:10:5
Mean age (range)	44.7 (18–73)	41.3 (20–68)	43.1 (18–73)
H pylori positive	67	59	126
H pylori negative	35	36	71
Indeterminate results	7	4	11

¹C = Chinese; I = Indian; M = Malay; O = Others.

Table 2 Sensitivity, specificity, predictive values, and likelihood ratios of rapid blood test for H pylori infection

Performance characteristics	BM	QV	UG	PS
Sensitivity (%)	67.2	43.3	55.9	80.2
Specificity (%)	97.1	99	99	95.8
Positive predictive value (%)	97.8	98	99	97.1
Negative predictive value (%)	60.7	47.9	58.1	73.1
Positive likelihood ratio	23.2	31.2	41.3	19.1
Negative likelihood ratio	0.338	0.567	0.441	0.207