Table 1 Summary of infant samples and demographic per group

Number of stool samples

520

106

–

Gestation (weeks)*

27 (25–28)

27 (26.5–28)

0.393

Birth weight (g)*

910 (863–1199)

1000 (725–1105)

0.612

Birth mode (CS/vaginal)

12/16

3/4

1.0

Gender (male/female)

20/8

4/3

0.475

Breast milk exposure (yes/no)

25/3

7/0

0.820

Antibiotic prediagnosis (days)*

–

7 (2–14)

–

Antibiotic total (days)*

4.5 (2–9.5)

23 (10–32)

0.071