. 2003 Dec;71(12):6915–6920. doi: 10.1128/IAI.71.12.6915-6920.2003

TABLE 2.

Correlation (R²) of phagocytosis titers and AIs with total IgG levels and individual IgG subclasses

Parameter	Correlation with phagocytosis titer	Correlation with AI
AI	0.18^a	1.0
Total IgG	0.67^a	0.34^b
IgG1	0.53^a	0.50^a
IgG2a	0.72^a	0.39^b
IgG2b	0.71^a	0.37^b
IgG3	0.58^a	0.32

P < 0.01.

P < 0.05.