Table 1 Metadata of preterm study participants including information on longitudinal sampling.

From: Longitudinal development of the airway metagenome of preterm very low birth weight infants during the first two years of life

Variables

Preterm infants

Number of study participants

24

Birth

Median gestational age in weeks of pregnancy (range)

29 (24–33)

Median birth weight in grams (range)

958 (585–1910)

Median birth weight percentiles (in %)

40 (<3–70)

Mode of delivery

Elective Caesarean section (CS)

6

Non-elective Caesarean section (CS)

11

Vaginal delivery (VD)

7

Female (in %) / Male (in %)

14 (58)/10 (42)

Median age at sampling in days postpartum (range)

Sampling a (week 1, w1)

4 (2–14)

Sampling b (month 1, m1)

33 (29–40)

Sampling c (month 9, m9)

272 (252–308)

Sampling d (month 15, m15)

450 (422–503)

Number of samples

Sampling a (w1)

23

Sampling b (m1)

24

Sampling c (m9)

23

Sampling d (m15)

17

Back to article page