Table 1. Results for stepwise regression of BP and cell-specific BP.

Model	R2 BP	Relative likelihood based on AIC	R2 cell-specific BP	Relative likelihood based on AIC	VIF
Functional mode	0.155	4.6 × 10−11	0.535***	1.0 × 10−6	NA
Mode	0.463***	8.1 × 10−7	0.709***	0.024	NA
fHNA	0.360*	2.5 × 10−7	−0.008	8.2 × 10−13	NA
Mode+fHNA	0.508***	3.6 × 10−6	0.725***	0.054	1.98
Abundance	0.506***	6.5 × 10−5	0.032	1.9 × 10−12	NA
Abundance+mode	0.670***	0.019	0.748***	0.38	1.46
Abundance+mode+fHNA	0.730***	1.0	0.764***	1.0	1.54, 2.58, 2.09

Abbreviations: AIC, Akaike's information criterion; BP, bacterial production; fHNA, fraction of cells belonging to the high nucleic acid population; VIF, variance-inflation factors. ***P<0.001, **P<0.01, *P⩽0.05.