Table 2. Spearman rank correlation of the association between plasma and IgG neutralization by Env-pseudotyped virus^a.

Env-pseudotyped virus	R	R2	P value
SF162.LS	0.8455	0.715	0.001
CH110.2	0.9455	0.894	<0.0001
CH181.12	0.7909	0.626	0.0037
CH120.6	0.8333	0.694	0.0014
QH0692.42	0.6057	0.367	0.0483
PVO.4	0.8273	0.684	0.0017
REJO4541.67	0.8095	0.655	0.0025
Du422.1	0.8716	0.760	0.0005
ZM109F.PB4	0.8349	0.697	0.0014
Q769.d22	0.7982	0.637	0.0032
BM2316	0.7762	0.602	0.0050

^aID₅₀ titers above the upper limit of detection were assigned a value of 200 units, equal to the upper limit of detection.