Table 3 General characteristics of women who provided breast milk samples (n = 77)

Age (years)^a

30 (28,34)

BMI (kg/m²) ^a

27.6 (25.5, 33.5)

BMI category (%) ^b

 Healthy weight

19 (24.7)

 Overweight

30 (38.9)

 Obese

28 (36.4)

Smoking status (%) ^b

 Never smoker

52 (67.5)

 Ex-smoker

22 (28.6)

 Current smoker

3 (3.9)

Parity (%) ^b

 1

40 (51.9)

  ≥ 2

37 (48.1)

Age of the baby at sampling (months) (92 samples

 Age at first infant follow-up appointment ^a

1.7 (1.5, 1.9)

 Age at second infant follow-up appointment ^a

6.3 (6.1, 6.6)