TABLE 1.
Baseline characteristics of study participants
| Infant characteristic | Value for: |
||||
|---|---|---|---|---|---|
| ITT control (n = 87)a | ITT test (n = 88)a | PP control (n = 63)b | PP test (n = 58)b | BF reference (n = 35)b | |
| Age (days)c | 7.7 ± 3.3 | 8.6 ± 3.3 | 8.2 ± 3.2 | 8.7 ± 3.2 | NAd |
| Male sex (n, [%]) | 44 (50.6) | 44 (50.0) | 33 (52.4) | 29 (50.0) | 25 (71.4) |
| Gestational age (wks)c | 39.2 ± 1.0 | 39.2 ± 1.1 | 39.3 ± 1.1 | 39.2 ± 1.0 | 39.3 ± 1.1 |
| Siblings at birth (n [% yes])e | 58 (66.7) | 56 (63.6) | 41 (65.1) | 35 (60.3) | 20 (57.1) |
| Cesarean delivery (n [%])e | 32 (36.8) | 32 (36.4) | 24 (38.1) | 19 (32.8) | 13 (37.1) |
| Wt (kg)c | 3.4 ± 0.4 | 3.4 ± 0.4 | 3.3 ± 0.4 | 3.4 ± 0.4 | 3.4 ± 0.3 |
| Length (cm)c | 50.9 ± 1.9 | 50.7 ± 1.7 | 49.9 ± 1.8 | 50.1 ± 1.8 | 50.3 ± 1.5 |
a
Some parameters were previously reported (30).
b
Stool samples with good-quality 16S gene amplification coverage.
c
Values are means ± standard deviations.
d
NA, not applicable.
e
No difference between PP control and PP test by two-tailed chi-square with Fisher’s exact probability test.