Table 1.
Measured and calculated cohort characteristics from infants of birth to six months of age.
| Characteristic | Delivery | Month 1 | Month 2 | Month 3 | Month 4 | Month 5 | Month 6 | p-Value |
|---|---|---|---|---|---|---|---|---|
| Infant weight (kg) | 3.7 ± 0.4 (3.2–4.4) |
4.5 ± 0.5 (4.0–5.5) |
5.4 ± 0.6 (4.8–7.1) |
6.1 ± 0.8 (5.3–8.3) |
6.7 ± 0.9 (5.7–9.3) |
7.3 ± 1.0 (6.2–10.0) |
7.6 ± 1.0 (6.4–10.1) |
<0.0001 |
| Infant length (cm) | 51.5 ± 2.1 (48.0–55.0) |
54.8 ± 1.7 (51.9–57.4) |
58.0 ± 2.1 (55.4–63.0) |
60.9 ± 2.2 (58.1–64.6) |
63.0 ± 2.0 (58.1–64.6) |
65.0 ± 1.6 (63.2–68.3) |
66.4 ± 1.9 (64.3–70.6) |
<0.0001 |
| Weight for length (z score) | 0.1 ± 0.8 (−1.7–1.4) |
0.2 ± 1.0 (−1.4–1.6) |
0.1 ± 1.4 (−1.7–2.8) |
−0.1 ± 1.1 (−1.5–2.0) |
0.0 ± 1.3 (−1.4–2.9) |
0.2 ± 1.3 (−1.0–3.3) |
0.3 ± 1.3 (−1.4–2.9) |
0.981 |
| Infant head circumference (cm) | - | 38.1 ± 0.9 (36.5–39.5) |
39.8 ± 1.4 (37.5–42.0) |
41.3 ± 1.2 (39.5–43.0) |
42.5 ± 1.6 (40.4–45.7) |
43.5 ± 1.4 (41.6–46.0) |
44.5 ± 1.8 (42.0–48.0) |
<0.0001 |
| Head circumference for age (z score) | - | −0.3 ± 0.5 (−1.1–0.4) |
0.9 ± 1.0 (−0.6–2.4) |
0.2 ± 0.7 (−1.2–0.9) |
1.2 ± 1.1 (−0.5–3.4) |
1.3 ± 1.0 (−0.05–2.9) |
0.9 ± 1.1 (−0.7–3.0) |
<0.0001 |
| Maternal weight (kg) | - | 71.0 ± 10.8 (53.7–93.2) |
70.7 ± 11.2 (51.5–93.1) |
70.2 ± 12.1 (50.5–95.4) |
70.2 ± 13.2 (50.0–98.3) |
69.7 ± 12.1 (50.3–98.0) |
70.1 ± 13.6 (50.1–97.4) |
0.617 |
| Maternal BMI (kg/m2) | - | 25.5 ± 2.9 (21.8–31.9) |
25.4 ± 3.1 (20.9–31.8) |
25.2 ± 3.4 (20.5–32.6) |
25.2 ± 3.7 (20.3–33.6) |
25.0 ± 3.8 (20.4–33.5) |
25.2 ± 3.8 (20.3–33.3) |
0.479 |
Data are presented as the mean ± standard deviation (range). - indicates that data were not collected at these time points.