Table 1 Subject characteristics

Number of cases

138

Percentage boys (%)

53.3

Birth Weight (kg)

3.4 ± 0.4

Birth Weight standard deviation score

-0.25 ± 0.92

Birth Length (cm)

50.45 ± 1.78

Birth Length standard deviation score

0.07 ± 0.96

BMI Mother (kg/m²)

23.19 ± 3.95

Percentage of households with low income (%)

13.6

Maternal smoking before pregnancy (%)

44.4

Maternal smoking during pregnancy (%)

9.6

Breastfeeding (%) at the age of 3w

73.2

Breastfeeding (%) at the age of 26w

23.9

Breastfeeding (%) at the age of 52w

16.7

Infant use of antibiotics (%) at the age of 3w

1.5

Infant use of antibiotics (%) at the age of 26w

29.9

Infant use of antibiotics (%) at the age of 52w

50.7