Table 4.

Coefficients from linear regression model of principal component analysis (PCA) composite variables predicting alpha-diversity (Faith’s Phylogenetic Diversity), controlling for age and BMI

	β	t	P value
Intercept	21.940	8.48	<0.001
Component 1	0.639	2.47	0.015
Component 2	0.500	1.32	0.190
Age	−0.021	−0.78	0.439
BMI	−0.092	−1.18	0.240

BMI, body mass index.