Table 1 Outcomes, exposure, and confounders included in the statistical models.

From: Development of gut microbiota during the first 2 years of life

Outcome

Exposure

Confounders

Child gut microbiota at birth, 6 m, 12 m and 24 m

Age

 

Maternal gut microbiota at gestational week 26–28

Furry pet, parity

Mode of delivery

Maternal BMI, parity, gestational age, birth weight

Parity

Maternal age

Gestational age

Maternal education level*

Birth weight

Maternal BMI, maternal education level, parity, gestational age*

Child gut microbiota at birth, 6 m, 12 m and 24 m

Prenatal antibiotic treatment (maternal use of antibiotics during pregnancy)

Maternal age, maternal education, parity, maternal BMI*

Child gut microbiota at 24 m

Antibiotic treatment

Maternal age, maternal education level, sex, gestational age, mode of delivery, parity, birth weight

Child gut microbiota at birth, 6 m, 12 m and 24 m

Furry pet in the household at baseline

Maternal age, maternal education level

  1. BMI Body Mass Index, m month.
  2. *Maternal smoking during pregnancy was identified as a potential confounder. However, in our maternal cohort no women reported smoking whilst pregnant, and this variable is therefore not included in the model.
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