Table 1.
Description of the study members who provided a breast milk sample, in relation to the wider Cambridge Baby Growth Study cohort. Median and IQR are displayed
| Mothers providing HM samples (n = 614) | All CBGS mothers exclusively breast and mixed feeding (n = 924) | |
|---|---|---|
| Demographics | ||
| Gestational age (weeks) | 40.1 (39.1–41.0) | 40.0 (39.1–41.0) |
| Maternal age (years) | 33.9 (31.1–36.5) | 34.0 (31.2–36.5) |
| Maternal BMI (kg/m2) | 22.8 (20.9–25.2) | 22.7 (20.8–25.2) |
| Index of deprivation | 9.0 (6.9–9.0) | 9.0 (6.8–9.0) |
| Maternal primiparity (%) | 43 | 42 |
| White caucasian (%) | 96 | 96 |
| Infant sex (% male) | 51 | 51 |
| Exclusive breast feeding (%) | 73 | 77 |
| Growth data | ||
| Birth | ||
| Weight (kg) | 3.56 (3.22–3.87) | 3.55 (3.22–3.85) |
| Length (cm) | 51.5 (50.0–53.5) | 51.5 (50.0–53.3) |
| Mean skinfold thickness (mm) | 6.2 (5.3–7.4) | 6.1 (5.2–7.3) |
| BMI (kg/m2) | 13.3 (12.2–14.3) | 13.3 (12.2–14.2) |
| 3 months | ||
| Weight (kg) | 6.10 (5.60–6.64) | 6.09 (5.59–6.62) |
| Length (cm) | 61.2 (59.4–63.0) | 61.2 (59.5–63.0) |
| Mean skinfold thickness (mm) | 10.8 (9.4–11.9) | 10.7 (9.4–11.9) |
| BMI (kg/m2) | 16.3 (15.4–17.2) | 16.2 (15.3–17.2) |
| 12 months | ||
| Weight (kg) | 9.85 (9.10–10.60) | 9.88 (9.15–10.60) |
| Length (cm) | 75.8 (74.0–77.7) | 75.6 (73.9–77.7) |
| Mean skinfold thickness (mm) | 11.0 (9.8–12.5) | 11.0 (9.7–12.4) |
| BMI (kg/m2) | 17.1 (16.2–18.0) | 17.1 (16.3–18.1) |