Table 4.

Linear regression summary for age predicting IgM and IgG value

	Estimate	95% CI	p-Value
IgM
Intercept	0.20	0.18 to 0.22	<2×10−16
Age	−0.0009	−0.002 to −0.0003	0.003
IgG
Intercept	0.02	0.01 to 0.03	8.70×10−8
Age	0.0009	0.0006 to 0.001	1.61×10−10

For IgM values: R-squared: 0.0083, adjusted R-squared: 0.0074. For IgG values: R-squared: 0.0389, adjusted R-squared: 0.0380.