Table 2 Result of the models for gut bacterial composition personalization. Personalization expressed as minimum dissimilarity Bray-Curtis (BC) and weighted unifrac (Wunifrac) (n = 543 samples). Season is marginally significant in one model and significant in interaction with age in the other

BC

Intercept

−0.04

0.04

−0.11

0.03

-

Age¹

0.03

0.01

0.01

0.06

0.02

Season²

0.06

M (ref L)

0.03

0.04

−0.05

0.09

R (ref L)

−0.06

0.04

−0.12

0.01

Group³

0.5

MST (ref MOT)

0.03

0.03

−0.02

0.09

SST (ref MOT)

0.04

0.04

−0.04

0.11

Gestation

−0.08

0.04

−0.15

−0.00

0.05

Dispersion parameter

Intercept

3.98

0.07

3.87

4.12

-

Age¹

0.38

0.07

0.25

0.50

< 0.001

Wunifrac

Intercept

−1.68

0.03

−1.74

−1.62

-

Age¹

−0.02

0.02

−0.05

0.02

-

Season²

-

M (ref L)

0.11

0.03

0.05

0.18

R (ref L)

0.06

0.03

0.00

0.11

Group³

0.6

MST (ref MOT)

0.01

0.02

−0.03

0.05

SST (ref MOT)

0.03

0.03

−0.02

0.08

Gestation⁴

−0.05

0.03

−0.11

0.01

0.08

Age¹ × season²

0.04

Age × M (ref L)

0.01

0.03

−0.04

0.07

Age × R (ref L)

0.06

0.02

0.02

0.10

Dispersion parameter

Intercept

4.99

0.07

4.89

5.15

Age¹

0.28

0.07

0.17

0.43

< 0.001