TABLE 2.

Efficiency of detection of different genotypes relative to detection by limiting-dilution assay

Genotype (no. of samples)	Efficiency of detection by:
	bDNA-2		Roche Monitor version 1		Roche Monitor version 2
	Median (range)	Ratioa(P value)b	Median (range)	Ratio (P value)	Median (range)	Ratio (P value)
1 (20)	1.155 (0.092–20.96)		0.531 (0.043–11.74)		0.103 (0.006–3.009)
2 (20)	1.401 (0.076–200.0)	1.210 (0.516)c	0.307 (0.002–5.758)	0.578 (0.330)d	0.096 (0.012–97.00)	0.932 (1.00)c
3 (20)	0.943 (0.013–20.00)	0.816 (0.850)c	0.050 (0.000–1.000)	0.094 (<0.001)d	0.084 (0.008–13.80)	0.816 (0.745)c
4 (19)	2.200 (0.075–13.25)	1.905 (0.126)c	0.036 (0.000–0.497)	0.068 (<0.001)d	0.154 (0.001–1.448)	1.495 (0.844)c
6 (16)	0.720 (0.134–1.387)	0.626 (0.030)d	0.078 (0.009–0.500)	0.147 (0.001)d	0.304 (0.019–6.467)	2.950 (0.203)c

^aRatio of efficiency of detection to that of genotype 1 samples. 

^bProbability of difference in efficiency of detection between genotypes (Mann-Whitney U test). 

^cNot significantly different from genotype 1 values. 

^dSignificantly different from genotype 1 values (P <0.05).