Table 1 Relevant details of participants

Number of participants

31

16

Number of times breast milk was donated by a single donor during the study period

75

2.4 (3.1)

1 (1–2.5)

139

8.7 (8.1)

6.5 (2–10.3)

 < 0.001***

Number of disposal milk samples

17

22.7

34

24.5

0.77

Amount of breast milk disposal (ml)

520 (417.3)

455 (120–897.5)

927.5 (297.6)

990 (772.5–1150)

 < 0.01**

Age (years)

32.3 (4.9)

32.5 (28–35)

32.6 (4.7)

32.5 (28.8–36.3)

0.75

Gestational age (weeks)

38.8 (1.2)

39 (38–40)

27.6 (3.9)

28.5 (23.8–31)

 < 0.001***

Birthweight (g)

3,084 (322.3)

3,099 (2,884–3,290)

1,040 (601.4)

867 (571–1,414.8)

 < 0.001***

Chronological age of infant when breast milk was first donated (weeks)

18.9 (6.8)

17 (13–23)

9.8 (5.2)

9 (6–12)

 < 0.001***