Table 3 Selected characteristics of Illawarra Born mothers and children
Variable (continuous) | N | Mean (SD) | Variable (categorical) | N | % |
|---|---|---|---|---|---|
Pregnancy | |||||
Maternal age (years) | 41 | 31.3 (4.6) | Country of birth Australia | 41 | 88 |
Time to fall pregnant (months) | 41 | 5.3 (7.5) | Previous parity | 41 | 61 |
Aware pregnant (weeks) | 41 | 4.9 (1.7) | |||
Pre-pregnancy BMI (kg/m2) | 40 | 24.6 (4.2) | Planned pregnancy | 41 | 78 |
Pregnancy weight gain (kg) hospital records | 39 | 5.0 (1.7) | Maternal education | 41 | |
2nd trimester systolic BP (mmHg) | 39 | 115.3 (10.5) | Early school leaver | 2 | |
2nd trimester bloods | Completed schooling | 5 | |||
Iron (μmol/L) | 39 | 14.9 (7.6) | Trade qualification | 12 | |
Transferrin (g/L) | 39 | 3.8 (0.06) | University or college | 81 | |
Transferrin saturation (%) | 39 | 20.1 (11) | Household income | 40 | |
Ferritin (μg/L) | 39 | 16.5 (11.6) | < AUD $80,000 pa | 23 | |
C-reactive protein (CRP) (mg/L) | 39 | 4.5 (2.9) | > AUD $80,000 pa | 77 | |
Haemoglobin (g/L) | 39 | 118.7 (7.6) | Married | 41 | 73 |
Vitamin B12 (pmol/L) | 39 | 232.5 (60.5) | Maternal smoking history | 41 | |
25(OH)vitamin D (nmol/l) | 39 | 67.1 (2.9) | Non-smoker | 56 | |
Lead (μmol/L) | 39 | 0.03 (0.02) | Smoked previously | 44 | |
Serum folate (nmol/L) | 39 | 39.1 (8.5) | Unsafe alcohol consumption | 44 | |
Soluble transferrin receptor (mg/L) | 38 | 1.3 (.3) | Adequate physical activity < * | 41 | 49 |
2nd trimester urine | 39 | ||||
Iodine (μg/L) | 143.8 (13.2) | ||||
Birth | |||||
Birthweight (g) | 40 | 3498.9 (409.8) | Gestational weight gain (at T2)# | 39 | |
Birth length (cm) | 39 | 50.7 (2.1) | Inadequate | 59 | |
Head circumference (cm) | 40 | 34.7 (1.3) | Adequate | 23 | |
Gestational age (weeks) | 40 | 39.8 (1.2) | Excessive | 18 | |
Birthweight for gestational age z-score | Induced labour | 40 | 38 | ||
Cord blood | 21 | Caesarean delivery | 40 | 13 | |
Iron (μmol/L) | 21 | 29.3 (6.9) | Instrumental birth | 40 | 23 |
Transferrin (g/L) | 21 | 2 (0.3) | Episiotomy | 39 | 23 |
Transferrin saturation (%) | 21 | 74.8 (19.7) | Post-partum haemorrhage | 39 | 8 |
Ferritin (μg/L) | 21 | 326.6 (260.9) | Perineal trauma | 40 | |
CRP (mg/L) | 21 | 0.4 (1.5) | Intact | 25 | |
Haemoglobin (g/L) | 19 | 138.2 (27.2) | 1st degree tear | 33 | |
25(OH)vitamin D (nmol/l) | 21 | 87.2 (24.5) | 2nd degree tear | 20 | |
Lead (μmol/L) | 20 | 0.2 (0.01) | 3rd degree tear | 3 | |
Serum folate (nmol/L) | 20 | 44.4 (1.9) | Pre-term birth | 0 | |
Soluble transferrin receptor (mg/L) | 20 | 2 (0.6) | Child female | 48 | |
Infancy | |||||
BMI (kg/m2) at 6 months | 27 | 16.7 (1.9) | Maternal weight retention > 5 kg at 6 months post-partum | 33 | 12.1 |
Systolic BP (mmHg) at 7–10 weeks | 23 | 91.3 (15.2) | Breastfeeding at 6 months | 29 | 72.4 |
Systolic BP(mmHg) at 6 months | 25 | 95.6 (15.0) | Introduction of solids at < 4 months | 31 | 22.6 |
AIMS score | 35 | 27.4 (9.4) | Introduction of solids at < 6 months | 31 | 96.8 |