Table 1. Participant characteristics of a longitudinal study measuring the concentration of pesticides in human milk collected from women (n = 16) at 2, 5, 9 and 12 months postpartum in Western Australia.
| Mean ± SD (Range) | ||||
|---|---|---|---|---|
| Mother (n = 16) | ||||
| Age | 33.9 ± 5.1 (24–43) | |||
| Parity | 2.3 ± 1.1 (0–4) | |||
| Infant gestational age (weeks) | 39.4 ± 1.4 (38–43) | |||
| Lactation stage (Months) | 2 | 5 | 9 | 12 |
| Maternal body mass index (BMI) (kg.m−2) | 24.9 ± 4.6 (20.4–35.5) | 24.3 ± 5.3 (19.0–35.2) | 24.5 ± 5.9 (17.9–37.2) | 23.7 ± 6.5 (18.2–37.2) |
| Percentage fat mass (BIS#) | 34.4 ± 5.3 (25.7–44.7) | 32.8 ± 6.2 (25.1–47.2) | 32.6 ± 6.9 (20.0–44.3) | 30.2 ± 7.6 (19.4–44.5) |
| Infant (Male/Female = 9/7) | ||||
| Age (Months) | 2.0 ± 0.1 (1.9–2.2) | 5.1 ± 0.2 (1.8–5.4) | 9.2 ± 0.3 (8.8–9.8) | 12.2 ± 0.3 (11.6–12.7) |
| Infant weight (kg)* | 5.6 ± 0.9 (4.4–7.4) | 7.3 ± 0.8 (6.2–8.7) | 8.5 ± 0.9 (6.7–10.1) | 9.3 ± 0.7 (8.3–10.6) |
| Body length (cm)* | 57.9 ± 1.8 (54.5–60.0) | 64.5 ± 2.4 (60.5–69.5) | 70.0 ± 2.3 (66.0–74.0) | 73.6 ± 2.4 (69.0–76.3) |
| Head circumference (cm)* | 39.6 ± 1.5 (37.0–42.0) | 42.8 ± 1.9 (40.0–45.0) | 45.4 ± 1.8 (43.0–48.5) | 46.3 ± 1.5 (44.3–49.5) |
| Percentage fat mass (ultrasound skinfolds) | 25.6 ± 4.7 (20.9–37.9) | 26.1 ± 3.5 (19.7–33.2) | 25.7 ± 4.7 (15.0–34.7) | 24.8 ± 4.2 (18.2–30.9) |
| Percentage fat mass (BIS#) | 22.1 ± 2.0 (19.2–24.1) | 27.6 ± 2.8 (21.7–30.9) | 25.1 ± 5.3 (16.3–33.8) | 25.2 ± 3.8 (19.6–30.6) |
#BIS: bioimpedance spectroscopy.
*Significant difference (P < 0.05) was observed between months 2–5, 2–9, 2–12, 5–9, 5–12 and 9–12.