Table 2 Baseline maternal characteristics (continued)
| Â | n | % |
|---|---|---|
BMIa: | ||
 Underweight (BMI < 18.5 kg/m2) | 696 | 2.96 |
 Healthy Weight (BMI 18.5 – 24.9 kg/m2) | 12,297 | 52.35 |
 Overweight (BMI 25.0 – 29.9 kg/m2) | 6473 | 27.56 |
 Obese (BMI ≥ 30 kg/m2) | 4024 | 17.13 |
(Self-perceived) Ethnic Background: | ||
 White | 10,722 | 45.65 |
 Black | 4359 | 18.56 |
 Asian | 4984 | 21.22 |
 Mixed | 804 | 3.42 |
 Other | 2621 | 11.16 |
Parity: | ||
 0 | 13,224 | 56.30 |
 1–3 | 9652 | 41.09 |
  ≥ 4 | 614 | 2.61 |
Incidence of Gestational Diabetes | 1854 | 7.89 |
Glucose Tolerance Testb | ||
 Not Offered | 5546 | 23.61 |
 Offered and Accepted | 17,844 | 75.96 |
 Offered and Declined | 100 | 0.43 |
Postcode Index of Multiple Deprivation Decile c | ||
 1 | 1199 | 5.1 |
 2 | 3861 | 16.44 |
 3 | 4019 | 17.11 |
 4 | 3797 | 16.16 |
 5 | 3068 | 13.06 |
 6 | 2599 | 11.06 |
 7 | 2015 | 8.58 |
 8 | 1389 | 5.93 |
 9 | 1053 | 4.48 |
 10 | 490 | 2.09 |