TABLE 4.

Estimated log-odds ratios for interactions between virus and plasma clade^a

Virus clade	Plasma sample-infecting strain clade
	CRF07	CRF01	CRF02	Clade A	Clade B	Clade C	Clade D
CRF07	1.288a	−0.532	NSb	NS	−0.494	0.700	0.389c
CRF01	−0.546	1.295	−0.739	NS	NS	NS	−0.137
CRF02	−0.473	0.877	1.184	NS	−0.304	−0.363	0.680
Clade A	NS	−1.184	NS	0.895	0.316	NS	0.245
Clade B	−0.224	−0.750	NS	NS	0.802	−0.230	−0.795
Clade C	0.742	−0.680	NS	NS	−0.219	0.430	0.087
Clade D	−1.116	NS	NS	NS	NS	NS	−1.346
Clade G	−0.501	−0.460	−0.265	0.440	−0.085	−0.007	−0.878

^aBold values indicate where the clade of the infecting strain of the plasma samples matches that of the test viruses. Only statistically significant interactions are shown. Positive values among within-clade interactions indicate that plasma samples and viruses from the same clade typically increase the proportion of ID₅₀ values above the median value of 28; the value indicates the magnitude of the effect. Most off-diagonal estimates are negative, which indicates that a mismatch between plasma sample and virus clades decreases the proportion of ID₅₀ values above the median ID₅₀. Because the estimated effects for each factor total zero, some estimates are determined by the others; italicized values are implied by the zero-total contrast and do not have an estimated standard deviation or P value.

^bNS, not significant.